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Finding the Fourth Proportional to 11,928.78, 17,893.17 and 4,137.57

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Solution

The fourth proportional to 11,928.78, 17,893.17 and 4,137.57 is: 6,206.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928.78 : 17,893.17 = 4,137.57 : x
  2. Step 2: Convert to fraction form
    11,928.78/17,893.17 = 4,137.57/x
  3. Step 3: Cross multiply
    11,928.78x = 17,893.17 × 4,137.57
  4. Step 4: Simplify right side
    11,928.78x = 74,034,243.40
  5. Step 5: Solve for x
    x = 74,034,243.40/11,928.78
  6. Step 6: Final answer
    x = 6,206.36

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