Finding the Fourth Proportional to 5,418.94, 7,478.49 and 3,061.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,418.94 : 7,478.49 = 3,061.12 : x
2. Step 2: Convert to fraction form
   5,418.94/7,478.49 = 3,061.12/x
3. Step 3: Cross multiply
   5,418.94x = 7,478.49 × 3,061.12
4. Step 4: Simplify right side
   5,418.94x = 22,892,555.31
5. Step 5: Solve for x
   x = 22,892,555.31/5,418.94
6. Step 6: Final answer
   x = 4,224.54