Finding the Fourth Proportional to 9,100.79, 12,529.94 and 8,902.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,100.79 : 12,529.94 = 8,902.27 : x
2. Step 2: Convert to fraction form
   9,100.79/12,529.94 = 8,902.27/x
3. Step 3: Cross multiply
   9,100.79x = 12,529.94 × 8,902.27
4. Step 4: Simplify right side
   9,100.79x = 111,544,801.80
5. Step 5: Solve for x
   x = 111,544,801.80/9,100.79
6. Step 6: Final answer
   x = 12,256.61