Finding the Fourth Proportional to 22,935.15, 31,651.76 and 12,866.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,935.15 : 31,651.76 = 12,866.78 : x
2. Step 2: Convert to fraction form
   22,935.15/31,651.76 = 12,866.78/x
3. Step 3: Cross multiply
   22,935.15x = 31,651.76 × 12,866.78
4. Step 4: Simplify right side
   22,935.15x = 407,256,343.83
5. Step 5: Solve for x
   x = 407,256,343.83/22,935.15
6. Step 6: Final answer
   x = 17,756.86