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Finding the Fourth Proportional to 9,131.92, 13,686.90 and 4,746.88

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Solution

The fourth proportional to 9,131.92, 13,686.90 and 4,746.88 is: 7,114.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,131.92 : 13,686.90 = 4,746.88 : x
  2. Step 2: Convert to fraction form
    9,131.92/13,686.90 = 4,746.88/x
  3. Step 3: Cross multiply
    9,131.92x = 13,686.90 × 4,746.88
  4. Step 4: Simplify right side
    9,131.92x = 64,970,071.87
  5. Step 5: Solve for x
    x = 64,970,071.87/9,131.92
  6. Step 6: Final answer
    x = 7,114.61

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