Finding the Fourth Proportional to 10,391.85, 15,588.99 and 3,816.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,391.85 : 15,588.99 = 3,816.54 : x
2. Step 2: Convert to fraction form
   10,391.85/15,588.99 = 3,816.54/x
3. Step 3: Cross multiply
   10,391.85x = 15,588.99 × 3,816.54
4. Step 4: Simplify right side
   10,391.85x = 59,496,003.89
5. Step 5: Solve for x
   x = 59,496,003.89/10,391.85
6. Step 6: Final answer
   x = 5,725.26