Finding the Fourth Proportional to 5,643.47, 8,478.30 and 3,541.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,643.47 : 8,478.30 = 3,541.56 : x
2. Step 2: Convert to fraction form
   5,643.47/8,478.30 = 3,541.56/x
3. Step 3: Cross multiply
   5,643.47x = 8,478.30 × 3,541.56
4. Step 4: Simplify right side
   5,643.47x = 30,026,408.15
5. Step 5: Solve for x
   x = 30,026,408.15/5,643.47
6. Step 6: Final answer
   x = 5,320.56