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Finding the Fourth Proportional to 4,939.22, 7,400.18 and 4,158.38

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Solution

The fourth proportional to 4,939.22, 7,400.18 and 4,158.38 is: 6,230.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.22 : 7,400.18 = 4,158.38 : x
  2. Step 2: Convert to fraction form
    4,939.22/7,400.18 = 4,158.38/x
  3. Step 3: Cross multiply
    4,939.22x = 7,400.18 × 4,158.38
  4. Step 4: Simplify right side
    4,939.22x = 30,772,760.51
  5. Step 5: Solve for x
    x = 30,772,760.51/4,939.22
  6. Step 6: Final answer
    x = 6,230.29

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