Finding the Fourth Proportional to 5,428.72, 7,490.43 and 3,305.37

Step by Step Solution

1. Step 1: Write the proportion equation
   5,428.72 : 7,490.43 = 3,305.37 : x
2. Step 2: Convert to fraction form
   5,428.72/7,490.43 = 3,305.37/x
3. Step 3: Cross multiply
   5,428.72x = 7,490.43 × 3,305.37
4. Step 4: Simplify right side
   5,428.72x = 24,758,642.61
5. Step 5: Solve for x
   x = 24,758,642.61/5,428.72
6. Step 6: Final answer
   x = 4,560.68