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Finding the Fourth Proportional to 13,691.04, 18,892.56 and 7,724.16

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Solution

The fourth proportional to 13,691.04, 18,892.56 and 7,724.16 is: 10,658.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.04 : 18,892.56 = 7,724.16 : x
  2. Step 2: Convert to fraction form
    13,691.04/18,892.56 = 7,724.16/x
  3. Step 3: Cross multiply
    13,691.04x = 18,892.56 × 7,724.16
  4. Step 4: Simplify right side
    13,691.04x = 145,929,156.25
  5. Step 5: Solve for x
    x = 145,929,156.25/13,691.04
  6. Step 6: Final answer
    x = 10,658.73

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