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Finding the Fourth Proportional to 28,368.87, 42,559.62 and 8,648.97

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Solution

The fourth proportional to 28,368.87, 42,559.62 and 8,648.97 is: 12,975.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.87 : 42,559.62 = 8,648.97 : x
  2. Step 2: Convert to fraction form
    28,368.87/42,559.62 = 8,648.97/x
  3. Step 3: Cross multiply
    28,368.87x = 42,559.62 × 8,648.97
  4. Step 4: Simplify right side
    28,368.87x = 368,096,876.59
  5. Step 5: Solve for x
    x = 368,096,876.59/28,368.87
  6. Step 6: Final answer
    x = 12,975.38

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