Finding the Fourth Proportional to 10,755.19, 16,131.16 and 3,639.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,755.19 : 16,131.16 = 3,639.61 : x
2. Step 2: Convert to fraction form
   10,755.19/16,131.16 = 3,639.61/x
3. Step 3: Cross multiply
   10,755.19x = 16,131.16 × 3,639.61
4. Step 4: Simplify right side
   10,755.19x = 58,711,032.39
5. Step 5: Solve for x
   x = 58,711,032.39/10,755.19
6. Step 6: Final answer
   x = 5,458.86