Finding the Fourth Proportional to 23,478.51, 32,400.16 and 12,868.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,478.51 : 32,400.16 = 12,868.12 : x
2. Step 2: Convert to fraction form
   23,478.51/32,400.16 = 12,868.12/x
3. Step 3: Cross multiply
   23,478.51x = 32,400.16 × 12,868.12
4. Step 4: Simplify right side
   23,478.51x = 416,929,146.90
5. Step 5: Solve for x
   x = 416,929,146.90/23,478.51
6. Step 6: Final answer
   x = 17,757.90