Finding the Fourth Proportional to 13,100.15, 18,082.04 and 8,563.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.15 : 18,082.04 = 8,563.50 : x
2. Step 2: Convert to fraction form
   13,100.15/18,082.04 = 8,563.50/x
3. Step 3: Cross multiply
   13,100.15x = 18,082.04 × 8,563.50
4. Step 4: Simplify right side
   13,100.15x = 154,845,506.72
5. Step 5: Solve for x
   x = 154,845,506.72/13,100.15
6. Step 6: Final answer
   x = 11,820.13