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Finding the Fourth Proportional to 10,966.51, 16,447.20 and 4,390.93

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Solution

The fourth proportional to 10,966.51, 16,447.20 and 4,390.93 is: 6,585.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,966.51 : 16,447.20 = 4,390.93 : x
  2. Step 2: Convert to fraction form
    10,966.51/16,447.20 = 4,390.93/x
  3. Step 3: Cross multiply
    10,966.51x = 16,447.20 × 4,390.93
  4. Step 4: Simplify right side
    10,966.51x = 72,218,503.90
  5. Step 5: Solve for x
    x = 72,218,503.90/10,966.51
  6. Step 6: Final answer
    x = 6,585.37

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