Finding the Fourth Proportional to 8,847.90, 12,211.29 and 8,100.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,847.90 : 12,211.29 = 8,100.52 : x
2. Step 2: Convert to fraction form
   8,847.90/12,211.29 = 8,100.52/x
3. Step 3: Cross multiply
   8,847.90x = 12,211.29 × 8,100.52
4. Step 4: Simplify right side
   8,847.90x = 98,917,798.87
5. Step 5: Solve for x
   x = 98,917,798.87/8,847.90
6. Step 6: Final answer
   x = 11,179.81