Finding the Fourth Proportional to 23,175.16, 31,981.53 and 13,105.58

Step by Step Solution

1. Step 1: Write the proportion equation
   23,175.16 : 31,981.53 = 13,105.58 : x
2. Step 2: Convert to fraction form
   23,175.16/31,981.53 = 13,105.58/x
3. Step 3: Cross multiply
   23,175.16x = 31,981.53 × 13,105.58
4. Step 4: Simplify right side
   23,175.16x = 419,136,274.50
5. Step 5: Solve for x
   x = 419,136,274.50/23,175.16
6. Step 6: Final answer
   x = 18,085.59