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Finding the Fourth Proportional to 8,757.88, 12,085.87 and 4,981.77

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Solution

The fourth proportional to 8,757.88, 12,085.87 and 4,981.77 is: 6,874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.88 : 12,085.87 = 4,981.77 : x
  2. Step 2: Convert to fraction form
    8,757.88/12,085.87 = 4,981.77/x
  3. Step 3: Cross multiply
    8,757.88x = 12,085.87 × 4,981.77
  4. Step 4: Simplify right side
    8,757.88x = 60,209,065.59
  5. Step 5: Solve for x
    x = 60,209,065.59/8,757.88
  6. Step 6: Final answer
    x = 6,874.85

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