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Finding the Fourth Proportional to 17,938.80, 26,906.11 and 4,792.20

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Solution

The fourth proportional to 17,938.80, 26,906.11 and 4,792.20 is: 7,187.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,938.80 : 26,906.11 = 4,792.20 : x
  2. Step 2: Convert to fraction form
    17,938.80/26,906.11 = 4,792.20/x
  3. Step 3: Cross multiply
    17,938.80x = 26,906.11 × 4,792.20
  4. Step 4: Simplify right side
    17,938.80x = 128,939,460.34
  5. Step 5: Solve for x
    x = 128,939,460.34/17,938.80
  6. Step 6: Final answer
    x = 7,187.74

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