Finding the Fourth Proportional to 9,128.04, 12,566.22 and 8,710.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.04 : 12,566.22 = 8,710.08 : x
2. Step 2: Convert to fraction form
   9,128.04/12,566.22 = 8,710.08/x
3. Step 3: Cross multiply
   9,128.04x = 12,566.22 × 8,710.08
4. Step 4: Simplify right side
   9,128.04x = 109,452,781.50
5. Step 5: Solve for x
   x = 109,452,781.50/9,128.04
6. Step 6: Final answer
   x = 11,990.83