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Finding the Fourth Proportional to 12,311.28, 18,466.95 and 4,916.34

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Solution

The fourth proportional to 12,311.28, 18,466.95 and 4,916.34 is: 7,374.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.28 : 18,466.95 = 4,916.34 : x
  2. Step 2: Convert to fraction form
    12,311.28/18,466.95 = 4,916.34/x
  3. Step 3: Cross multiply
    12,311.28x = 18,466.95 × 4,916.34
  4. Step 4: Simplify right side
    12,311.28x = 90,789,804.96
  5. Step 5: Solve for x
    x = 90,789,804.96/12,311.28
  6. Step 6: Final answer
    x = 7,374.52

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