Finding the Fourth Proportional to 10,877.76, 15,014.16 and 7,516.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,877.76 : 15,014.16 = 7,516.80 : x
2. Step 2: Convert to fraction form
   10,877.76/15,014.16 = 7,516.80/x
3. Step 3: Cross multiply
   10,877.76x = 15,014.16 × 7,516.80
4. Step 4: Simplify right side
   10,877.76x = 112,858,437.89
5. Step 5: Solve for x
   x = 112,858,437.89/10,877.76
6. Step 6: Final answer
   x = 10,375.15