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Finding the Fourth Proportional to 9,395.76, 12,962.40 and 6,406.80

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Solution

The fourth proportional to 9,395.76, 12,962.40 and 6,406.80 is: 8,838.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,395.76 : 12,962.40 = 6,406.80 : x
  2. Step 2: Convert to fraction form
    9,395.76/12,962.40 = 6,406.80/x
  3. Step 3: Cross multiply
    9,395.76x = 12,962.40 × 6,406.80
  4. Step 4: Simplify right side
    9,395.76x = 83,047,504.32
  5. Step 5: Solve for x
    x = 83,047,504.32/9,395.76
  6. Step 6: Final answer
    x = 8,838.83

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