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Finding the Fourth Proportional to 13,722.84, 20,584.24 and 4,957.76

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Solution

The fourth proportional to 13,722.84, 20,584.24 and 4,957.76 is: 7,436.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.84 : 20,584.24 = 4,957.76 : x
  2. Step 2: Convert to fraction form
    13,722.84/20,584.24 = 4,957.76/x
  3. Step 3: Cross multiply
    13,722.84x = 20,584.24 × 4,957.76
  4. Step 4: Simplify right side
    13,722.84x = 102,051,721.70
  5. Step 5: Solve for x
    x = 102,051,721.70/13,722.84
  6. Step 6: Final answer
    x = 7,436.63

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