Finding the Fourth Proportional to 10,385.29, 15,579.98 and 3,811.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,385.29 : 15,579.98 = 3,811.53 : x
2. Step 2: Convert to fraction form
   10,385.29/15,579.98 = 3,811.53/x
3. Step 3: Cross multiply
   10,385.29x = 15,579.98 × 3,811.53
4. Step 4: Simplify right side
   10,385.29x = 59,383,587.09
5. Step 5: Solve for x
   x = 59,383,587.09/10,385.29
6. Step 6: Final answer
   x = 5,718.05