Finding the Fourth Proportional to 22,541.10, 31,108.66 and 13,109

Step by Step Solution

1. Step 1: Write the proportion equation
   22,541.10 : 31,108.66 = 13,109 : x
2. Step 2: Convert to fraction form
   22,541.10/31,108.66 = 13,109/x
3. Step 3: Cross multiply
   22,541.10x = 31,108.66 × 13,109
4. Step 4: Simplify right side
   22,541.10x = 407,803,423.94
5. Step 5: Solve for x
   x = 407,803,423.94/22,541.10
6. Step 6: Final answer
   x = 18,091.55