Finding the Fourth Proportional to 9,411.56, 13,047.43 and 8,912.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,411.56 : 13,047.43 = 8,912.22 : x
2. Step 2: Convert to fraction form
   9,411.56/13,047.43 = 8,912.22/x
3. Step 3: Cross multiply
   9,411.56x = 13,047.43 × 8,912.22
4. Step 4: Simplify right side
   9,411.56x = 116,281,566.59
5. Step 5: Solve for x
   x = 116,281,566.59/9,411.56
6. Step 6: Final answer
   x = 12,355.19