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Finding the Fourth Proportional to 8,603.88, 12,905.82 and 2,447.88

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Solution

The fourth proportional to 8,603.88, 12,905.82 and 2,447.88 is: 3,671.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.88 : 12,905.82 = 2,447.88 : x
  2. Step 2: Convert to fraction form
    8,603.88/12,905.82 = 2,447.88/x
  3. Step 3: Cross multiply
    8,603.88x = 12,905.82 × 2,447.88
  4. Step 4: Simplify right side
    8,603.88x = 31,591,821.89
  5. Step 5: Solve for x
    x = 31,591,821.89/8,603.88
  6. Step 6: Final answer
    x = 3,671.81

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