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Finding the Fourth Proportional to 9,978.64, 14,968.60 and 5,866

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Solution

The fourth proportional to 9,978.64, 14,968.60 and 5,866 is: 8,799.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,978.64 : 14,968.60 = 5,866 : x
  2. Step 2: Convert to fraction form
    9,978.64/14,968.60 = 5,866/x
  3. Step 3: Cross multiply
    9,978.64x = 14,968.60 × 5,866
  4. Step 4: Simplify right side
    9,978.64x = 87,805,807.60
  5. Step 5: Solve for x
    x = 87,805,807.60/9,978.64
  6. Step 6: Final answer
    x = 8,799.38

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