Finding the Fourth Proportional to 23,151.32, 34,716.70 and 12,618.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,151.32 : 34,716.70 = 12,618.18 : x
2. Step 2: Convert to fraction form
   23,151.32/34,716.70 = 12,618.18/x
3. Step 3: Cross multiply
   23,151.32x = 34,716.70 × 12,618.18
4. Step 4: Simplify right side
   23,151.32x = 438,061,585.38
5. Step 5: Solve for x
   x = 438,061,585.38/23,151.32
6. Step 6: Final answer
   x = 18,921.67