Finding the Fourth Proportional to 22,502.94, 31,055.34 and 13,553.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,502.94 : 31,055.34 = 13,553.31 : x
2. Step 2: Convert to fraction form
   22,502.94/31,055.34 = 13,553.31/x
3. Step 3: Cross multiply
   22,502.94x = 31,055.34 × 13,553.31
4. Step 4: Simplify right side
   22,502.94x = 420,902,650.18
5. Step 5: Solve for x
   x = 420,902,650.18/22,502.94
6. Step 6: Final answer
   x = 18,704.34