Finding the Fourth Proportional to 11,078.84, 15,280.20 and 7,100.36

Step by Step Solution

1. Step 1: Write the proportion equation
   11,078.84 : 15,280.20 = 7,100.36 : x
2. Step 2: Convert to fraction form
   11,078.84/15,280.20 = 7,100.36/x
3. Step 3: Cross multiply
   11,078.84x = 15,280.20 × 7,100.36
4. Step 4: Simplify right side
   11,078.84x = 108,494,920.87
5. Step 5: Solve for x
   x = 108,494,920.87/11,078.84
6. Step 6: Final answer
   x = 9,792.99