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Finding the Fourth Proportional to 17,708.72, 26,579.46 and 8,949.78

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Solution

The fourth proportional to 17,708.72, 26,579.46 and 8,949.78 is: 13,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,708.72 : 26,579.46 = 8,949.78 : x
  2. Step 2: Convert to fraction form
    17,708.72/26,579.46 = 8,949.78/x
  3. Step 3: Cross multiply
    17,708.72x = 26,579.46 × 8,949.78
  4. Step 4: Simplify right side
    17,708.72x = 237,880,319.52
  5. Step 5: Solve for x
    x = 237,880,319.52/17,708.72
  6. Step 6: Final answer
    x = 13,432.95

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