Finding the Fourth Proportional to 8,868.09, 13,223.90 and 8,432.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,868.09 : 13,223.90 = 8,432.05 : x
2. Step 2: Convert to fraction form
   8,868.09/13,223.90 = 8,432.05/x
3. Step 3: Cross multiply
   8,868.09x = 13,223.90 × 8,432.05
4. Step 4: Simplify right side
   8,868.09x = 111,504,586.00
5. Step 5: Solve for x
   x = 111,504,586.00/8,868.09
6. Step 6: Final answer
   x = 12,573.69