Finding the Fourth Proportional to 8,900.55, 12,277.98 and 7,223.85

Step by Step Solution

1. Step 1: Write the proportion equation
   8,900.55 : 12,277.98 = 7,223.85 : x
2. Step 2: Convert to fraction form
   8,900.55/12,277.98 = 7,223.85/x
3. Step 3: Cross multiply
   8,900.55x = 12,277.98 × 7,223.85
4. Step 4: Simplify right side
   8,900.55x = 88,694,285.82
5. Step 5: Solve for x
   x = 88,694,285.82/8,900.55
6. Step 6: Final answer
   x = 9,965.03