Finding the Fourth Proportional to 11,281.61, 15,560.71 and 7,872.93

Step by Step Solution

1. Step 1: Write the proportion equation
   11,281.61 : 15,560.71 = 7,872.93 : x
2. Step 2: Convert to fraction form
   11,281.61/15,560.71 = 7,872.93/x
3. Step 3: Cross multiply
   11,281.61x = 15,560.71 × 7,872.93
4. Step 4: Simplify right side
   11,281.61x = 122,508,360.90
5. Step 5: Solve for x
   x = 122,508,360.90/11,281.61
6. Step 6: Final answer
   x = 10,859.12