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Finding the Fourth Proportional to 12,391.68, 18,581.76 and 7,199.04

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Solution

The fourth proportional to 12,391.68, 18,581.76 and 7,199.04 is: 10,795.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.68 : 18,581.76 = 7,199.04 : x
  2. Step 2: Convert to fraction form
    12,391.68/18,581.76 = 7,199.04/x
  3. Step 3: Cross multiply
    12,391.68x = 18,581.76 × 7,199.04
  4. Step 4: Simplify right side
    12,391.68x = 133,770,833.51
  5. Step 5: Solve for x
    x = 133,770,833.51/12,391.68
  6. Step 6: Final answer
    x = 10,795.21

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