Finding the Fourth Proportional to 23,392.89, 32,280.98 and 12,780.47

Step by Step Solution

1. Step 1: Write the proportion equation
   23,392.89 : 32,280.98 = 12,780.47 : x
2. Step 2: Convert to fraction form
   23,392.89/32,280.98 = 12,780.47/x
3. Step 3: Cross multiply
   23,392.89x = 32,280.98 × 12,780.47
4. Step 4: Simplify right side
   23,392.89x = 412,565,871.15
5. Step 5: Solve for x
   x = 412,565,871.15/23,392.89
6. Step 6: Final answer
   x = 17,636.38