Finding the Fourth Proportional to 23,480.42, 32,403.81 and 12,870.05

Step by Step Solution

1. Step 1: Write the proportion equation
   23,480.42 : 32,403.81 = 12,870.05 : x
2. Step 2: Convert to fraction form
   23,480.42/32,403.81 = 12,870.05/x
3. Step 3: Cross multiply
   23,480.42x = 32,403.81 × 12,870.05
4. Step 4: Simplify right side
   23,480.42x = 417,038,654.89
5. Step 5: Solve for x
   x = 417,038,654.89/23,480.42
6. Step 6: Final answer
   x = 17,761.12