Finding the Fourth Proportional to 22,856.88, 31,541.00 and 12,783.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,856.88 : 31,541.00 = 12,783.57 : x
2. Step 2: Convert to fraction form
   22,856.88/31,541.00 = 12,783.57/x
3. Step 3: Cross multiply
   22,856.88x = 31,541.00 × 12,783.57
4. Step 4: Simplify right side
   22,856.88x = 403,206,684.45
5. Step 5: Solve for x
   x = 403,206,684.45/22,856.88
6. Step 6: Final answer
   x = 17,640.50