Finding the Fourth Proportional to 22,578.60, 31,156.98 and 12,506.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,578.60 : 31,156.98 = 12,506.34 : x
2. Step 2: Convert to fraction form
   22,578.60/31,156.98 = 12,506.34/x
3. Step 3: Cross multiply
   22,578.60x = 31,156.98 × 12,506.34
4. Step 4: Simplify right side
   22,578.60x = 389,659,785.25
5. Step 5: Solve for x
   x = 389,659,785.25/22,578.60
6. Step 6: Final answer
   x = 17,257.92