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Finding the Fourth Proportional to 12,930.72, 17,819.36 and 9,198.24

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Solution

The fourth proportional to 12,930.72, 17,819.36 and 9,198.24 is: 12,675.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930.72 : 17,819.36 = 9,198.24 : x
  2. Step 2: Convert to fraction form
    12,930.72/17,819.36 = 9,198.24/x
  3. Step 3: Cross multiply
    12,930.72x = 17,819.36 × 9,198.24
  4. Step 4: Simplify right side
    12,930.72x = 163,906,749.93
  5. Step 5: Solve for x
    x = 163,906,749.93/12,930.72
  6. Step 6: Final answer
    x = 12,675.76

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