Finding the Fourth Proportional to 11,290.19, 15,598.17 and 7,772.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,290.19 : 15,598.17 = 7,772.15 : x
2. Step 2: Convert to fraction form
   11,290.19/15,598.17 = 7,772.15/x
3. Step 3: Cross multiply
   11,290.19x = 15,598.17 × 7,772.15
4. Step 4: Simplify right side
   11,290.19x = 121,231,355.96
5. Step 5: Solve for x
   x = 121,231,355.96/11,290.19
6. Step 6: Final answer
   x = 10,737.77