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Finding the Fourth Proportional to 12,978,927.72, 19,466,904.42 and 3,395,231.28

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Solution

The fourth proportional to 12,978,927.72, 19,466,904.42 and 3,395,231.28 is: 5,092,457.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,978,927.72 : 19,466,904.42 = 3,395,231.28 : x
  2. Step 2: Convert to fraction form
    12,978,927.72/19,466,904.42 = 3,395,231.28/x
  3. Step 3: Cross multiply
    12,978,927.72x = 19,466,904.42 × 3,395,231.28
  4. Step 4: Simplify right side
    12,978,927.72x = 66,094,642,811,554.26
  5. Step 5: Solve for x
    x = 66,094,642,811,554.26/12,978,927.72
  6. Step 6: Final answer
    x = 5,092,457.89

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