Finding the Fourth Proportional to 7,200.86, 9,941.71 and 5,519.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200.86 : 9,941.71 = 5,519.10 : x
2. Step 2: Convert to fraction form
   7,200.86/9,941.71 = 5,519.10/x
3. Step 3: Cross multiply
   7,200.86x = 9,941.71 × 5,519.10
4. Step 4: Simplify right side
   7,200.86x = 54,869,255.75
5. Step 5: Solve for x
   x = 54,869,255.75/7,200.86
6. Step 6: Final answer
   x = 7,619.82