Finding the Fourth Proportional to 10,790.58, 16,161.56 and 5,527.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,790.58 : 16,161.56 = 5,527.20 : x
2. Step 2: Convert to fraction form
   10,790.58/16,161.56 = 5,527.20/x
3. Step 3: Cross multiply
   10,790.58x = 16,161.56 × 5,527.20
4. Step 4: Simplify right side
   10,790.58x = 89,328,174.43
5. Step 5: Solve for x
   x = 89,328,174.43/10,790.58
6. Step 6: Final answer
   x = 8,278.35