Finding the Fourth Proportional to 11,087.61, 15,294.25 and 8,099.79

Step by Step Solution

1. Step 1: Write the proportion equation
   11,087.61 : 15,294.25 = 8,099.79 : x
2. Step 2: Convert to fraction form
   11,087.61/15,294.25 = 8,099.79/x
3. Step 3: Cross multiply
   11,087.61x = 15,294.25 × 8,099.79
4. Step 4: Simplify right side
   11,087.61x = 123,880,213.21
5. Step 5: Solve for x
   x = 123,880,213.21/11,087.61
6. Step 6: Final answer
   x = 11,172.85