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Finding the Fourth Proportional to 6,659.79, 9,988.74 and 4,187.04

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Solution

The fourth proportional to 6,659.79, 9,988.74 and 4,187.04 is: 6,279.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659.79 : 9,988.74 = 4,187.04 : x
  2. Step 2: Convert to fraction form
    6,659.79/9,988.74 = 4,187.04/x
  3. Step 3: Cross multiply
    6,659.79x = 9,988.74 × 4,187.04
  4. Step 4: Simplify right side
    6,659.79x = 41,823,253.93
  5. Step 5: Solve for x
    x = 41,823,253.93/6,659.79
  6. Step 6: Final answer
    x = 6,279.97

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