Finding the Fourth Proportional to 10,782.90, 16,176.78 and 5,587.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,782.90 : 16,176.78 = 5,587.56 : x
2. Step 2: Convert to fraction form
   10,782.90/16,176.78 = 5,587.56/x
3. Step 3: Cross multiply
   10,782.90x = 16,176.78 × 5,587.56
4. Step 4: Simplify right side
   10,782.90x = 90,388,728.86
5. Step 5: Solve for x
   x = 90,388,728.86/10,782.90
6. Step 6: Final answer
   x = 8,382.60