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Finding the Fourth Proportional to 7,162.15, 10,747.14 and 2,779.78

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Solution

The fourth proportional to 7,162.15, 10,747.14 and 2,779.78 is: 4,171.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,162.15 : 10,747.14 = 2,779.78 : x
  2. Step 2: Convert to fraction form
    7,162.15/10,747.14 = 2,779.78/x
  3. Step 3: Cross multiply
    7,162.15x = 10,747.14 × 2,779.78
  4. Step 4: Simplify right side
    7,162.15x = 29,874,684.83
  5. Step 5: Solve for x
    x = 29,874,684.83/7,162.15
  6. Step 6: Final answer
    x = 4,171.19

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