Finding the Fourth Proportional to 10,578.30, 15,868.12 and 3,557.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,578.30 : 15,868.12 = 3,557.76 : x
2. Step 2: Convert to fraction form
   10,578.30/15,868.12 = 3,557.76/x
3. Step 3: Cross multiply
   10,578.30x = 15,868.12 × 3,557.76
4. Step 4: Simplify right side
   10,578.30x = 56,454,962.61
5. Step 5: Solve for x
   x = 56,454,962.61/10,578.30
6. Step 6: Final answer
   x = 5,336.87