Finding the Fourth Proportional to 22,541.68, 31,109.43 and 12,472.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,541.68 : 31,109.43 = 12,472.57 : x
2. Step 2: Convert to fraction form
   22,541.68/31,109.43 = 12,472.57/x
3. Step 3: Cross multiply
   22,541.68x = 31,109.43 × 12,472.57
4. Step 4: Simplify right side
   22,541.68x = 388,014,543.34
5. Step 5: Solve for x
   x = 388,014,543.34/22,541.68
6. Step 6: Final answer
   x = 17,213.20