Finding the Fourth Proportional to 10,941.30, 16,401.15 and 5,390.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,941.30 : 16,401.15 = 5,390.10 : x
2. Step 2: Convert to fraction form
   10,941.30/16,401.15 = 5,390.10/x
3. Step 3: Cross multiply
   10,941.30x = 16,401.15 × 5,390.10
4. Step 4: Simplify right side
   10,941.30x = 88,403,838.62
5. Step 5: Solve for x
   x = 88,403,838.62/10,941.30
6. Step 6: Final answer
   x = 8,079.83