Finding the Fourth Proportional to 10,782.72, 16,175.67 and 5,520.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,782.72 : 16,175.67 = 5,520.70 : x
2. Step 2: Convert to fraction form
   10,782.72/16,175.67 = 5,520.70/x
3. Step 3: Cross multiply
   10,782.72x = 16,175.67 × 5,520.70
4. Step 4: Simplify right side
   10,782.72x = 89,301,097.43
5. Step 5: Solve for x
   x = 89,301,097.43/10,782.72
6. Step 6: Final answer
   x = 8,281.87