Finding the Fourth Proportional to 22,555.93, 31,127.25 and 12,485.07

Step by Step Solution

1. Step 1: Write the proportion equation
   22,555.93 : 31,127.25 = 12,485.07 : x
2. Step 2: Convert to fraction form
   22,555.93/31,127.25 = 12,485.07/x
3. Step 3: Cross multiply
   22,555.93x = 31,127.25 × 12,485.07
4. Step 4: Simplify right side
   22,555.93x = 388,625,677.10
5. Step 5: Solve for x
   x = 388,625,677.10/22,555.93
6. Step 6: Final answer
   x = 17,229.42