Finding the Fourth Proportional to 9,278.88, 12,804.90 and 5,552.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,278.88 : 12,804.90 = 5,552.88 : x
2. Step 2: Convert to fraction form
   9,278.88/12,804.90 = 5,552.88/x
3. Step 3: Cross multiply
   9,278.88x = 12,804.90 × 5,552.88
4. Step 4: Simplify right side
   9,278.88x = 71,103,981.32
5. Step 5: Solve for x
   x = 71,103,981.32/9,278.88
6. Step 6: Final answer
   x = 7,663.00