Finding the Fourth Proportional to 9,520.43, 13,111.76 and 8,781.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,520.43 : 13,111.76 = 8,781.71 : x
2. Step 2: Convert to fraction form
   9,520.43/13,111.76 = 8,781.71/x
3. Step 3: Cross multiply
   9,520.43x = 13,111.76 × 8,781.71
4. Step 4: Simplify right side
   9,520.43x = 115,143,630.00
5. Step 5: Solve for x
   x = 115,143,630.00/9,520.43
6. Step 6: Final answer
   x = 12,094.37