Finding the Fourth Proportional to 11,411.43, 15,725.33 and 8,725.67

Step by Step Solution

1. Step 1: Write the proportion equation
   11,411.43 : 15,725.33 = 8,725.67 : x
2. Step 2: Convert to fraction form
   11,411.43/15,725.33 = 8,725.67/x
3. Step 3: Cross multiply
   11,411.43x = 15,725.33 × 8,725.67
4. Step 4: Simplify right side
   11,411.43x = 137,214,085.84
5. Step 5: Solve for x
   x = 137,214,085.84/11,411.43
6. Step 6: Final answer
   x = 12,024.27