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Finding the Fourth Proportional to 18,872.23, 28,308.41 and 5,724.71

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Solution

The fourth proportional to 18,872.23, 28,308.41 and 5,724.71 is: 8,587.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.23 : 28,308.41 = 5,724.71 : x
  2. Step 2: Convert to fraction form
    18,872.23/28,308.41 = 5,724.71/x
  3. Step 3: Cross multiply
    18,872.23x = 28,308.41 × 5,724.71
  4. Step 4: Simplify right side
    18,872.23x = 162,057,409.19
  5. Step 5: Solve for x
    x = 162,057,409.19/18,872.23
  6. Step 6: Final answer
    x = 8,587.09

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