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Finding the Fourth Proportional to 8,654.80, 12,982.20 and 5,371.60

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Solution

The fourth proportional to 8,654.80, 12,982.20 and 5,371.60 is: 8,057.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.80 : 12,982.20 = 5,371.60 : x
  2. Step 2: Convert to fraction form
    8,654.80/12,982.20 = 5,371.60/x
  3. Step 3: Cross multiply
    8,654.80x = 12,982.20 × 5,371.60
  4. Step 4: Simplify right side
    8,654.80x = 69,735,185.52
  5. Step 5: Solve for x
    x = 69,735,185.52/8,654.80
  6. Step 6: Final answer
    x = 8,057.40

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