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Finding the Fourth Proportional to 18,729.81, 28,098.90 and 7,043.13

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Solution

The fourth proportional to 18,729.81, 28,098.90 and 7,043.13 is: 10,566.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.81 : 28,098.90 = 7,043.13 : x
  2. Step 2: Convert to fraction form
    18,729.81/28,098.90 = 7,043.13/x
  3. Step 3: Cross multiply
    18,729.81x = 28,098.90 × 7,043.13
  4. Step 4: Simplify right side
    18,729.81x = 197,904,205.56
  5. Step 5: Solve for x
    x = 197,904,205.56/18,729.81
  6. Step 6: Final answer
    x = 10,566.27

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