Finding the Fourth Proportional to 9,242.29, 12,770.63 and 8,061.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,242.29 : 12,770.63 = 8,061.31 : x
2. Step 2: Convert to fraction form
   9,242.29/12,770.63 = 8,061.31/x
3. Step 3: Cross multiply
   9,242.29x = 12,770.63 × 8,061.31
4. Step 4: Simplify right side
   9,242.29x = 102,948,007.33
5. Step 5: Solve for x
   x = 102,948,007.33/9,242.29
6. Step 6: Final answer
   x = 11,138.80