Finding the Fourth Proportional to 11,085.45, 15,297.90 and 7,106.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,085.45 : 15,297.90 = 7,106.55 : x
2. Step 2: Convert to fraction form
   11,085.45/15,297.90 = 7,106.55/x
3. Step 3: Cross multiply
   11,085.45x = 15,297.90 × 7,106.55
4. Step 4: Simplify right side
   11,085.45x = 108,715,333.25
5. Step 5: Solve for x
   x = 108,715,333.25/11,085.45
6. Step 6: Final answer
   x = 9,807.03