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Finding the Fourth Proportional to 15,884.64, 21,919.82 and 8,810.91

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Solution

The fourth proportional to 15,884.64, 21,919.82 and 8,810.91 is: 12,158.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,884.64 : 21,919.82 = 8,810.91 : x
  2. Step 2: Convert to fraction form
    15,884.64/21,919.82 = 8,810.91/x
  3. Step 3: Cross multiply
    15,884.64x = 21,919.82 × 8,810.91
  4. Step 4: Simplify right side
    15,884.64x = 193,133,517.18
  5. Step 5: Solve for x
    x = 193,133,517.18/15,884.64
  6. Step 6: Final answer
    x = 12,158.51

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