Finding the Fourth Proportional to 22,759.49, 34,138.17 and 7,971.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,759.49 : 34,138.17 = 7,971.72 : x
2. Step 2: Convert to fraction form
   22,759.49/34,138.17 = 7,971.72/x
3. Step 3: Cross multiply
   22,759.49x = 34,138.17 × 7,971.72
4. Step 4: Simplify right side
   22,759.49x = 272,139,932.55
5. Step 5: Solve for x
   x = 272,139,932.55/22,759.49
6. Step 6: Final answer
   x = 11,957.21