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Finding the Fourth Proportional to 28,812.60, 43,207.92 and 11,278.44

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Solution

The fourth proportional to 28,812.60, 43,207.92 and 11,278.44 is: 16,913.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.60 : 43,207.92 = 11,278.44 : x
  2. Step 2: Convert to fraction form
    28,812.60/43,207.92 = 11,278.44/x
  3. Step 3: Cross multiply
    28,812.60x = 43,207.92 × 11,278.44
  4. Step 4: Simplify right side
    28,812.60x = 487,317,933.24
  5. Step 5: Solve for x
    x = 487,317,933.24/28,812.60
  6. Step 6: Final answer
    x = 16,913.36

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