Finding the Fourth Proportional to 9,819.66, 14,724.72 and 3,578.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.66 : 14,724.72 = 3,578.70 : x
2. Step 2: Convert to fraction form
   9,819.66/14,724.72 = 3,578.70/x
3. Step 3: Cross multiply
   9,819.66x = 14,724.72 × 3,578.70
4. Step 4: Simplify right side
   9,819.66x = 52,695,355.46
5. Step 5: Solve for x
   x = 52,695,355.46/9,819.66
6. Step 6: Final answer
   x = 5,366.31