Finding the Fourth Proportional to 23,411.15, 35,100.31 and 8,618.15

Step by Step Solution

1. Step 1: Write the proportion equation
   23,411.15 : 35,100.31 = 8,618.15 : x
2. Step 2: Convert to fraction form
   23,411.15/35,100.31 = 8,618.15/x
3. Step 3: Cross multiply
   23,411.15x = 35,100.31 × 8,618.15
4. Step 4: Simplify right side
   23,411.15x = 302,499,736.63
5. Step 5: Solve for x
   x = 302,499,736.63/23,411.15
6. Step 6: Final answer
   x = 12,921.18