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Finding the Fourth Proportional to 11,644.28, 17,466.47 and 4,979.81

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Solution

The fourth proportional to 11,644.28, 17,466.47 and 4,979.81 is: 7,469.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,644.28 : 17,466.47 = 4,979.81 : x
  2. Step 2: Convert to fraction form
    11,644.28/17,466.47 = 4,979.81/x
  3. Step 3: Cross multiply
    11,644.28x = 17,466.47 × 4,979.81
  4. Step 4: Simplify right side
    11,644.28x = 86,979,589.74
  5. Step 5: Solve for x
    x = 86,979,589.74/11,644.28
  6. Step 6: Final answer
    x = 7,469.73

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