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Finding the Fourth Proportional to 20,578.57, 30,867.63 and 4,996.20

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Solution

The fourth proportional to 20,578.57, 30,867.63 and 4,996.20 is: 7,494.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578.57 : 30,867.63 = 4,996.20 : x
  2. Step 2: Convert to fraction form
    20,578.57/30,867.63 = 4,996.20/x
  3. Step 3: Cross multiply
    20,578.57x = 30,867.63 × 4,996.20
  4. Step 4: Simplify right side
    20,578.57x = 154,220,853.01
  5. Step 5: Solve for x
    x = 154,220,853.01/20,578.57
  6. Step 6: Final answer
    x = 7,494.25

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