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Finding the Fourth Proportional to 11,789.70, 17,685.10 and 3,892.90

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Solution

The fourth proportional to 11,789.70, 17,685.10 and 3,892.90 is: 5,839.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,789.70 : 17,685.10 = 3,892.90 : x
  2. Step 2: Convert to fraction form
    11,789.70/17,685.10 = 3,892.90/x
  3. Step 3: Cross multiply
    11,789.70x = 17,685.10 × 3,892.90
  4. Step 4: Simplify right side
    11,789.70x = 68,846,325.79
  5. Step 5: Solve for x
    x = 68,846,325.79/11,789.70
  6. Step 6: Final answer
    x = 5,839.53

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