Finding the Fourth Proportional to 17,570.80, 24,233.16 and 12,790.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,570.80 : 24,233.16 = 12,790.72 : x
2. Step 2: Convert to fraction form
   17,570.80/24,233.16 = 12,790.72/x
3. Step 3: Cross multiply
   17,570.80x = 24,233.16 × 12,790.72
4. Step 4: Simplify right side
   17,570.80x = 309,959,564.28
5. Step 5: Solve for x
   x = 309,959,564.28/17,570.80
6. Step 6: Final answer
   x = 17,640.61