Finding the Fourth Proportional to 23,390.12, 32,278.83 and 12,780.41

Step by Step Solution

1. Step 1: Write the proportion equation
   23,390.12 : 32,278.83 = 12,780.41 : x
2. Step 2: Convert to fraction form
   23,390.12/32,278.83 = 12,780.41/x
3. Step 3: Cross multiply
   23,390.12x = 32,278.83 × 12,780.41
4. Step 4: Simplify right side
   23,390.12x = 412,536,681.72
5. Step 5: Solve for x
   x = 412,536,681.72/23,390.12
6. Step 6: Final answer
   x = 17,637.22