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Finding the Fourth Proportional to 12,721.66, 19,084.55 and 3,958.61

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Solution

The fourth proportional to 12,721.66, 19,084.55 and 3,958.61 is: 5,938.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.66 : 19,084.55 = 3,958.61 : x
  2. Step 2: Convert to fraction form
    12,721.66/19,084.55 = 3,958.61/x
  3. Step 3: Cross multiply
    12,721.66x = 19,084.55 × 3,958.61
  4. Step 4: Simplify right side
    12,721.66x = 75,548,175.26
  5. Step 5: Solve for x
    x = 75,548,175.26/12,721.66
  6. Step 6: Final answer
    x = 5,938.55

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