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Finding the Fourth Proportional to 37,728.78, 52,067.88 and 20,961.78

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Solution

The fourth proportional to 37,728.78, 52,067.88 and 20,961.78 is: 28,928.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,728.78 : 52,067.88 = 20,961.78 : x
  2. Step 2: Convert to fraction form
    37,728.78/52,067.88 = 20,961.78/x
  3. Step 3: Cross multiply
    37,728.78x = 52,067.88 × 20,961.78
  4. Step 4: Simplify right side
    37,728.78x = 1,091,435,445.63
  5. Step 5: Solve for x
    x = 1,091,435,445.63/37,728.78
  6. Step 6: Final answer
    x = 28,928.46

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