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Finding the Fourth Proportional to 12,815.34, 19,223.10 and 3,581.34

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Solution

The fourth proportional to 12,815.34, 19,223.10 and 3,581.34 is: 5,372.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.34 : 19,223.10 = 3,581.34 : x
  2. Step 2: Convert to fraction form
    12,815.34/19,223.10 = 3,581.34/x
  3. Step 3: Cross multiply
    12,815.34x = 19,223.10 × 3,581.34
  4. Step 4: Simplify right side
    12,815.34x = 68,844,456.95
  5. Step 5: Solve for x
    x = 68,844,456.95/12,815.34
  6. Step 6: Final answer
    x = 5,372.04

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