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Finding the Fourth Proportional to 14,779.72, 22,169.92 and 4,919.79

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Solution

The fourth proportional to 14,779.72, 22,169.92 and 4,919.79 is: 7,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.72 : 22,169.92 = 4,919.79 : x
  2. Step 2: Convert to fraction form
    14,779.72/22,169.92 = 4,919.79/x
  3. Step 3: Cross multiply
    14,779.72x = 22,169.92 × 4,919.79
  4. Step 4: Simplify right side
    14,779.72x = 109,071,350.72
  5. Step 5: Solve for x
    x = 109,071,350.72/14,779.72
  6. Step 6: Final answer
    x = 7,379.80

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