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Finding the Fourth Proportional to 6,962.28, 9,609.30 and 4,128.54

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Solution

The fourth proportional to 6,962.28, 9,609.30 and 4,128.54 is: 5,698.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,962.28 : 9,609.30 = 4,128.54 : x
  2. Step 2: Convert to fraction form
    6,962.28/9,609.30 = 4,128.54/x
  3. Step 3: Cross multiply
    6,962.28x = 9,609.30 × 4,128.54
  4. Step 4: Simplify right side
    6,962.28x = 39,672,379.42
  5. Step 5: Solve for x
    x = 39,672,379.42/6,962.28
  6. Step 6: Final answer
    x = 5,698.19

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