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Finding the Fourth Proportional to 15,609.48, 21,541.08 and 8,535.90

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Solution

The fourth proportional to 15,609.48, 21,541.08 and 8,535.90 is: 11,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,609.48 : 21,541.08 = 8,535.90 : x
  2. Step 2: Convert to fraction form
    15,609.48/21,541.08 = 8,535.90/x
  3. Step 3: Cross multiply
    15,609.48x = 21,541.08 × 8,535.90
  4. Step 4: Simplify right side
    15,609.48x = 183,872,504.77
  5. Step 5: Solve for x
    x = 183,872,504.77/15,609.48
  6. Step 6: Final answer
    x = 11,779.54

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