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Finding the Fourth Proportional to 11,870, 17,807.88 and 3,662

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Solution

The fourth proportional to 11,870, 17,807.88 and 3,662 is: 5,493.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,870 : 17,807.88 = 3,662 : x
  2. Step 2: Convert to fraction form
    11,870/17,807.88 = 3,662/x
  3. Step 3: Cross multiply
    11,870x = 17,807.88 × 3,662
  4. Step 4: Simplify right side
    11,870x = 65,212,456.56
  5. Step 5: Solve for x
    x = 65,212,456.56/11,870
  6. Step 6: Final answer
    x = 5,493.89

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