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Finding the Fourth Proportional to 21,978,087.48, 32,970,162.80 and 12,760,401.02

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Solution

The fourth proportional to 21,978,087.48, 32,970,162.80 and 12,760,401.02 is: 19,142,361.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,978,087.48 : 32,970,162.80 = 12,760,401.02 : x
  2. Step 2: Convert to fraction form
    21,978,087.48/32,970,162.80 = 12,760,401.02/x
  3. Step 3: Cross multiply
    21,978,087.48x = 32,970,162.80 × 12,760,401.02
  4. Step 4: Simplify right side
    21,978,087.48x = 420,712,498,889,736.25
  5. Step 5: Solve for x
    x = 420,712,498,889,736.25/21,978,087.48
  6. Step 6: Final answer
    x = 19,142,361.65

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