Finding the Fourth Proportional to 9,020.08, 12,440.82 and 7,763.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,020.08 : 12,440.82 = 7,763.20 : x
2. Step 2: Convert to fraction form
   9,020.08/12,440.82 = 7,763.20/x
3. Step 3: Cross multiply
   9,020.08x = 12,440.82 × 7,763.20
4. Step 4: Simplify right side
   9,020.08x = 96,580,573.82
5. Step 5: Solve for x
   x = 96,580,573.82/9,020.08
6. Step 6: Final answer
   x = 10,707.29