Finding the Fourth Proportional to 7,436.91, 11,099.94 and 7,116.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,436.91 : 11,099.94 = 7,116.15 : x
2. Step 2: Convert to fraction form
   7,436.91/11,099.94 = 7,116.15/x
3. Step 3: Cross multiply
   7,436.91x = 11,099.94 × 7,116.15
4. Step 4: Simplify right side
   7,436.91x = 78,988,838.03
5. Step 5: Solve for x
   x = 78,988,838.03/7,436.91
6. Step 6: Final answer
   x = 10,621.19