Finding the Fourth Proportional to 9,039.72, 12,483.94 and 8,061.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,039.72 : 12,483.94 = 8,061.80 : x
2. Step 2: Convert to fraction form
   9,039.72/12,483.94 = 8,061.80/x
3. Step 3: Cross multiply
   9,039.72x = 12,483.94 × 8,061.80
4. Step 4: Simplify right side
   9,039.72x = 100,643,027.49
5. Step 5: Solve for x
   x = 100,643,027.49/9,039.72
6. Step 6: Final answer
   x = 11,133.42