Finding the Fourth Proportional to 23,485.40, 32,409.78 and 12,875

Step by Step Solution

1. Step 1: Write the proportion equation
   23,485.40 : 32,409.78 = 12,875 : x
2. Step 2: Convert to fraction form
   23,485.40/32,409.78 = 12,875/x
3. Step 3: Cross multiply
   23,485.40x = 32,409.78 × 12,875
4. Step 4: Simplify right side
   23,485.40x = 417,275,917.50
5. Step 5: Solve for x
   x = 417,275,917.50/23,485.40
6. Step 6: Final answer
   x = 17,767.46