Finding the Fourth Proportional to 11,086.10, 16,629.23 and 7,813.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,086.10 : 16,629.23 = 7,813.88 : x
2. Step 2: Convert to fraction form
   11,086.10/16,629.23 = 7,813.88/x
3. Step 3: Cross multiply
   11,086.10x = 16,629.23 × 7,813.88
4. Step 4: Simplify right side
   11,086.10x = 129,938,744.10
5. Step 5: Solve for x
   x = 129,938,744.10/11,086.10
6. Step 6: Final answer
   x = 11,720.88