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Finding the Fourth Proportional to 8,508.63, 12,730.87 and 7,645.35

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Solution

The fourth proportional to 8,508.63, 12,730.87 and 7,645.35 is: 11,439.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,508.63 : 12,730.87 = 7,645.35 : x
  2. Step 2: Convert to fraction form
    8,508.63/12,730.87 = 7,645.35/x
  3. Step 3: Cross multiply
    8,508.63x = 12,730.87 × 7,645.35
  4. Step 4: Simplify right side
    8,508.63x = 97,331,956.95
  5. Step 5: Solve for x
    x = 97,331,956.95/8,508.63
  6. Step 6: Final answer
    x = 11,439.20

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