Finding the Fourth Proportional to 23,480.79, 32,402.73 and 12,870.19

Step by Step Solution

1. Step 1: Write the proportion equation
   23,480.79 : 32,402.73 = 12,870.19 : x
2. Step 2: Convert to fraction form
   23,480.79/32,402.73 = 12,870.19/x
3. Step 3: Cross multiply
   23,480.79x = 32,402.73 × 12,870.19
4. Step 4: Simplify right side
   23,480.79x = 417,029,291.62
5. Step 5: Solve for x
   x = 417,029,291.62/23,480.79
6. Step 6: Final answer
   x = 17,760.45