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Finding the Fourth Proportional to 8,664.88, 12,995.96 and 2,821.44

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Solution

The fourth proportional to 8,664.88, 12,995.96 and 2,821.44 is: 4,231.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.88 : 12,995.96 = 2,821.44 : x
  2. Step 2: Convert to fraction form
    8,664.88/12,995.96 = 2,821.44/x
  3. Step 3: Cross multiply
    8,664.88x = 12,995.96 × 2,821.44
  4. Step 4: Simplify right side
    8,664.88x = 36,667,321.38
  5. Step 5: Solve for x
    x = 36,667,321.38/8,664.88
  6. Step 6: Final answer
    x = 4,231.72

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