Finding the Fourth Proportional to 23,160.09, 31,960.59 and 13,088.44

Step by Step Solution

1. Step 1: Write the proportion equation
   23,160.09 : 31,960.59 = 13,088.44 : x
2. Step 2: Convert to fraction form
   23,160.09/31,960.59 = 13,088.44/x
3. Step 3: Cross multiply
   23,160.09x = 31,960.59 × 13,088.44
4. Step 4: Simplify right side
   23,160.09x = 418,314,104.78
5. Step 5: Solve for x
   x = 418,314,104.78/23,160.09
6. Step 6: Final answer
   x = 18,061.85