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Finding the Fourth Proportional to 10,471.56, 15,695.19 and 4,921.44

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Solution

The fourth proportional to 10,471.56, 15,695.19 and 4,921.44 is: 7,376.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,471.56 : 15,695.19 = 4,921.44 : x
  2. Step 2: Convert to fraction form
    10,471.56/15,695.19 = 4,921.44/x
  3. Step 3: Cross multiply
    10,471.56x = 15,695.19 × 4,921.44
  4. Step 4: Simplify right side
    10,471.56x = 77,242,935.87
  5. Step 5: Solve for x
    x = 77,242,935.87/10,471.56
  6. Step 6: Final answer
    x = 7,376.45

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