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Finding the Fourth Proportional to 6,600, 9,887.64 and 3,309.24

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Solution

The fourth proportional to 6,600, 9,887.64 and 3,309.24 is: 4,957.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,600 : 9,887.64 = 3,309.24 : x
  2. Step 2: Convert to fraction form
    6,600/9,887.64 = 3,309.24/x
  3. Step 3: Cross multiply
    6,600x = 9,887.64 × 3,309.24
  4. Step 4: Simplify right side
    6,600x = 32,720,573.79
  5. Step 5: Solve for x
    x = 32,720,573.79/6,600
  6. Step 6: Final answer
    x = 4,957.66

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