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Finding the Fourth Proportional to 39,708.53, 54,797.77 and 21,803.54

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Solution

The fourth proportional to 39,708.53, 54,797.77 and 21,803.54 is: 30,088.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,708.53 : 54,797.77 = 21,803.54 : x
  2. Step 2: Convert to fraction form
    39,708.53/54,797.77 = 21,803.54/x
  3. Step 3: Cross multiply
    39,708.53x = 54,797.77 × 21,803.54
  4. Step 4: Simplify right side
    39,708.53x = 1,194,785,267.00
  5. Step 5: Solve for x
    x = 1,194,785,267.00/39,708.53
  6. Step 6: Final answer
    x = 30,088.88

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