Finding the Fourth Proportional to 9,061.98, 12,502.96 and 5,285.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,061.98 : 12,502.96 = 5,285.31 : x
2. Step 2: Convert to fraction form
   9,061.98/12,502.96 = 5,285.31/x
3. Step 3: Cross multiply
   9,061.98x = 12,502.96 × 5,285.31
4. Step 4: Simplify right side
   9,061.98x = 66,081,959.42
5. Step 5: Solve for x
   x = 66,081,959.42/9,061.98
6. Step 6: Final answer
   x = 7,292.22