Finding the Fourth Proportional to 23,120.32, 31,906.15 and 13,049.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,120.32 : 31,906.15 = 13,049.18 : x
2. Step 2: Convert to fraction form
   23,120.32/31,906.15 = 13,049.18/x
3. Step 3: Cross multiply
   23,120.32x = 31,906.15 × 13,049.18
4. Step 4: Simplify right side
   23,120.32x = 416,349,094.46
5. Step 5: Solve for x
   x = 416,349,094.46/23,120.32
6. Step 6: Final answer
   x = 18,007.93