Finding the Fourth Proportional to 23,480.74, 32,402.28 and 12,870.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,480.74 : 32,402.28 = 12,870.10 : x
2. Step 2: Convert to fraction form
   23,480.74/32,402.28 = 12,870.10/x
3. Step 3: Cross multiply
   23,480.74x = 32,402.28 × 12,870.10
4. Step 4: Simplify right side
   23,480.74x = 417,020,583.83
5. Step 5: Solve for x
   x = 417,020,583.83/23,480.74
6. Step 6: Final answer
   x = 17,760.11