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Finding the Fourth Proportional to 11,404.98, 15,740.46 and 6,690.78

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Solution

The fourth proportional to 11,404.98, 15,740.46 and 6,690.78 is: 9,234.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,404.98 : 15,740.46 = 6,690.78 : x
  2. Step 2: Convert to fraction form
    11,404.98/15,740.46 = 6,690.78/x
  3. Step 3: Cross multiply
    11,404.98x = 15,740.46 × 6,690.78
  4. Step 4: Simplify right side
    11,404.98x = 105,315,954.96
  5. Step 5: Solve for x
    x = 105,315,954.96/11,404.98
  6. Step 6: Final answer
    x = 9,234.21

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