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Finding the Fourth Proportional to 28,542.78, 39,364.83 and 17,209.80

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Solution

The fourth proportional to 28,542.78, 39,364.83 and 17,209.80 is: 23,734.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,542.78 : 39,364.83 = 17,209.80 : x
  2. Step 2: Convert to fraction form
    28,542.78/39,364.83 = 17,209.80/x
  3. Step 3: Cross multiply
    28,542.78x = 39,364.83 × 17,209.80
  4. Step 4: Simplify right side
    28,542.78x = 677,460,851.33
  5. Step 5: Solve for x
    x = 677,460,851.33/28,542.78
  6. Step 6: Final answer
    x = 23,734.93

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