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Finding the Fourth Proportional to 12,731.60, 19,104.36 and 4,940.72

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Solution

The fourth proportional to 12,731.60, 19,104.36 and 4,940.72 is: 7,413.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.60 : 19,104.36 = 4,940.72 : x
  2. Step 2: Convert to fraction form
    12,731.60/19,104.36 = 4,940.72/x
  3. Step 3: Cross multiply
    12,731.60x = 19,104.36 × 4,940.72
  4. Step 4: Simplify right side
    12,731.60x = 94,389,293.54
  5. Step 5: Solve for x
    x = 94,389,293.54/12,731.60
  6. Step 6: Final answer
    x = 7,413.78

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