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Finding the Fourth Proportional to 8,198.56, 12,293.28 and 3,811.81

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Solution

The fourth proportional to 8,198.56, 12,293.28 and 3,811.81 is: 5,715.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,198.56 : 12,293.28 = 3,811.81 : x
  2. Step 2: Convert to fraction form
    8,198.56/12,293.28 = 3,811.81/x
  3. Step 3: Cross multiply
    8,198.56x = 12,293.28 × 3,811.81
  4. Step 4: Simplify right side
    8,198.56x = 46,859,647.64
  5. Step 5: Solve for x
    x = 46,859,647.64/8,198.56
  6. Step 6: Final answer
    x = 5,715.59

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