Finding the Fourth Proportional to 22,535.76, 31,105.59 and 13,106.13

Step by Step Solution

1. Step 1: Write the proportion equation
   22,535.76 : 31,105.59 = 13,106.13 : x
2. Step 2: Convert to fraction form
   22,535.76/31,105.59 = 13,106.13/x
3. Step 3: Cross multiply
   22,535.76x = 31,105.59 × 13,106.13
4. Step 4: Simplify right side
   22,535.76x = 407,673,906.27
5. Step 5: Solve for x
   x = 407,673,906.27/22,535.76
6. Step 6: Final answer
   x = 18,090.09