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Finding the Fourth Proportional to 12,687.82, 19,037.20 and 5,293.74

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Solution

The fourth proportional to 12,687.82, 19,037.20 and 5,293.74 is: 7,942.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.82 : 19,037.20 = 5,293.74 : x
  2. Step 2: Convert to fraction form
    12,687.82/19,037.20 = 5,293.74/x
  3. Step 3: Cross multiply
    12,687.82x = 19,037.20 × 5,293.74
  4. Step 4: Simplify right side
    12,687.82x = 100,777,987.13
  5. Step 5: Solve for x
    x = 100,777,987.13/12,687.82
  6. Step 6: Final answer
    x = 7,942.89

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