Finding the Fourth Proportional to 23,480.10, 32,403.78 and 12,870.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,480.10 : 32,403.78 = 12,870.18 : x
2. Step 2: Convert to fraction form
   23,480.10/32,403.78 = 12,870.18/x
3. Step 3: Cross multiply
   23,480.10x = 32,403.78 × 12,870.18
4. Step 4: Simplify right side
   23,480.10x = 417,042,481.28
5. Step 5: Solve for x
   x = 417,042,481.28/23,480.10
6. Step 6: Final answer
   x = 17,761.53