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Finding the Fourth Proportional to 39,912.56, 59,868.84 and 17,720.72

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Solution

The fourth proportional to 39,912.56, 59,868.84 and 17,720.72 is: 26,581.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,912.56 : 59,868.84 = 17,720.72 : x
  2. Step 2: Convert to fraction form
    39,912.56/59,868.84 = 17,720.72/x
  3. Step 3: Cross multiply
    39,912.56x = 59,868.84 × 17,720.72
  4. Step 4: Simplify right side
    39,912.56x = 1,060,918,950.36
  5. Step 5: Solve for x
    x = 1,060,918,950.36/39,912.56
  6. Step 6: Final answer
    x = 26,581.08

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