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Finding the Fourth Proportional to 9,142.08, 13,715.20 and 2,986.08

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Solution

The fourth proportional to 9,142.08, 13,715.20 and 2,986.08 is: 4,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,142.08 : 13,715.20 = 2,986.08 : x
  2. Step 2: Convert to fraction form
    9,142.08/13,715.20 = 2,986.08/x
  3. Step 3: Cross multiply
    9,142.08x = 13,715.20 × 2,986.08
  4. Step 4: Simplify right side
    9,142.08x = 40,954,684.42
  5. Step 5: Solve for x
    x = 40,954,684.42/9,142.08
  6. Step 6: Final answer
    x = 4,479.80

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