Finding the Fourth Proportional to 23,467.68, 32,385.12 and 12,857.16

Step by Step Solution

1. Step 1: Write the proportion equation
   23,467.68 : 32,385.12 = 12,857.16 : x
2. Step 2: Convert to fraction form
   23,467.68/32,385.12 = 12,857.16/x
3. Step 3: Cross multiply
   23,467.68x = 32,385.12 × 12,857.16
4. Step 4: Simplify right side
   23,467.68x = 416,380,669.46
5. Step 5: Solve for x
   x = 416,380,669.46/23,467.68
6. Step 6: Final answer
   x = 17,742.73