Finding the Fourth Proportional to 8,490.42, 12,736.20 and 2,250.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,490.42 : 12,736.20 = 2,250.34 : x
2. Step 2: Convert to fraction form
   8,490.42/12,736.20 = 2,250.34/x
3. Step 3: Cross multiply
   8,490.42x = 12,736.20 × 2,250.34
4. Step 4: Simplify right side
   8,490.42x = 28,660,780.31
5. Step 5: Solve for x
   x = 28,660,780.31/8,490.42
6. Step 6: Final answer
   x = 3,375.66