Finding the Fourth Proportional to 23,118.03, 31,916.61 and 15,174.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,118.03 : 31,916.61 = 15,174.18 : x
2. Step 2: Convert to fraction form
   23,118.03/31,916.61 = 15,174.18/x
3. Step 3: Cross multiply
   23,118.03x = 31,916.61 × 15,174.18
4. Step 4: Simplify right side
   23,118.03x = 484,308,385.13
5. Step 5: Solve for x
   x = 484,308,385.13/23,118.03
6. Step 6: Final answer
   x = 20,949.38