Finding the Fourth Proportional to 7,039.32, 10,558.94 and 5,716.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,039.32 : 10,558.94 = 5,716.78 : x
2. Step 2: Convert to fraction form
   7,039.32/10,558.94 = 5,716.78/x
3. Step 3: Cross multiply
   7,039.32x = 10,558.94 × 5,716.78
4. Step 4: Simplify right side
   7,039.32x = 60,363,168.95
5. Step 5: Solve for x
   x = 60,363,168.95/7,039.32
6. Step 6: Final answer
   x = 8,575.14