Finding the Fourth Proportional to 8,776.88, 12,110.48 and 5,422.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,776.88 : 12,110.48 = 5,422.56 : x
2. Step 2: Convert to fraction form
   8,776.88/12,110.48 = 5,422.56/x
3. Step 3: Cross multiply
   8,776.88x = 12,110.48 × 5,422.56
4. Step 4: Simplify right side
   8,776.88x = 65,669,804.43
5. Step 5: Solve for x
   x = 65,669,804.43/8,776.88
6. Step 6: Final answer
   x = 7,482.14