Finding the Fourth Proportional to 23,390.37, 32,278.82 and 12,780.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,390.37 : 32,278.82 = 12,780.18 : x
2. Step 2: Convert to fraction form
   23,390.37/32,278.82 = 12,780.18/x
3. Step 3: Cross multiply
   23,390.37x = 32,278.82 × 12,780.18
4. Step 4: Simplify right side
   23,390.37x = 412,529,065.89
5. Step 5: Solve for x
   x = 412,529,065.89/23,390.37
6. Step 6: Final answer
   x = 17,636.71