Finding the Fourth Proportional to 23,483.10, 32,406.60 and 12,728.30

Step by Step Solution

1. Step 1: Write the proportion equation
   23,483.10 : 32,406.60 = 12,728.30 : x
2. Step 2: Convert to fraction form
   23,483.10/32,406.60 = 12,728.30/x
3. Step 3: Cross multiply
   23,483.10x = 32,406.60 × 12,728.30
4. Step 4: Simplify right side
   23,483.10x = 412,480,764.75
5. Step 5: Solve for x
   x = 412,480,764.75/23,483.10
6. Step 6: Final answer
   x = 17,565.00