Finding the Fourth Proportional to 31,279.28, 43,164.78 and 17,132

Step by Step Solution

1. Step 1: Write the proportion equation
   31,279.28 : 43,164.78 = 17,132 : x
2. Step 2: Convert to fraction form
   31,279.28/43,164.78 = 17,132/x
3. Step 3: Cross multiply
   31,279.28x = 43,164.78 × 17,132
4. Step 4: Simplify right side
   31,279.28x = 739,499,010.96
5. Step 5: Solve for x
   x = 739,499,010.96/31,279.28
6. Step 6: Final answer
   x = 23,641.82