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Finding the Fourth Proportional to 10,891.78, 16,337.67 and 2,683.78

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Solution

The fourth proportional to 10,891.78, 16,337.67 and 2,683.78 is: 4,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.78 : 16,337.67 = 2,683.78 : x
  2. Step 2: Convert to fraction form
    10,891.78/16,337.67 = 2,683.78/x
  3. Step 3: Cross multiply
    10,891.78x = 16,337.67 × 2,683.78
  4. Step 4: Simplify right side
    10,891.78x = 43,846,711.99
  5. Step 5: Solve for x
    x = 43,846,711.99/10,891.78
  6. Step 6: Final answer
    x = 4,025.67

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