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Finding the Fourth Proportional to 8,649.48, 12,978.46 and 5,361.70

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Solution

The fourth proportional to 8,649.48, 12,978.46 and 5,361.70 is: 8,045.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.48 : 12,978.46 = 5,361.70 : x
  2. Step 2: Convert to fraction form
    8,649.48/12,978.46 = 5,361.70/x
  3. Step 3: Cross multiply
    8,649.48x = 12,978.46 × 5,361.70
  4. Step 4: Simplify right side
    8,649.48x = 69,586,608.98
  5. Step 5: Solve for x
    x = 69,586,608.98/8,649.48
  6. Step 6: Final answer
    x = 8,045.18

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