Finding the Fourth Proportional to 23,109.60, 34,643.61 and 8,315.04

Step by Step Solution

1. Step 1: Write the proportion equation
   23,109.60 : 34,643.61 = 8,315.04 : x
2. Step 2: Convert to fraction form
   23,109.60/34,643.61 = 8,315.04/x
3. Step 3: Cross multiply
   23,109.60x = 34,643.61 × 8,315.04
4. Step 4: Simplify right side
   23,109.60x = 288,063,002.89
5. Step 5: Solve for x
   x = 288,063,002.89/23,109.60
6. Step 6: Final answer
   x = 12,465.08