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Finding the Fourth Proportional to 18,916.86, 26,100.99 and 11,361.18

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Solution

The fourth proportional to 18,916.86, 26,100.99 and 11,361.18 is: 15,675.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,916.86 : 26,100.99 = 11,361.18 : x
  2. Step 2: Convert to fraction form
    18,916.86/26,100.99 = 11,361.18/x
  3. Step 3: Cross multiply
    18,916.86x = 26,100.99 × 11,361.18
  4. Step 4: Simplify right side
    18,916.86x = 296,538,045.57
  5. Step 5: Solve for x
    x = 296,538,045.57/18,916.86
  6. Step 6: Final answer
    x = 15,675.86

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