Finding the Fourth Proportional to 31,876.18, 43,988.48 and 17,728.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,876.18 : 43,988.48 = 17,728.72 : x
2. Step 2: Convert to fraction form
   31,876.18/43,988.48 = 17,728.72/x
3. Step 3: Cross multiply
   31,876.18x = 43,988.48 × 17,728.72
4. Step 4: Simplify right side
   31,876.18x = 779,859,445.15
5. Step 5: Solve for x
   x = 779,859,445.15/31,876.18
6. Step 6: Final answer
   x = 24,465.27