Finding the Fourth Proportional to 10,387.53, 15,583.37 and 3,813.77

Step by Step Solution

1. Step 1: Write the proportion equation
   10,387.53 : 15,583.37 = 3,813.77 : x
2. Step 2: Convert to fraction form
   10,387.53/15,583.37 = 3,813.77/x
3. Step 3: Cross multiply
   10,387.53x = 15,583.37 × 3,813.77
4. Step 4: Simplify right side
   10,387.53x = 59,431,408.89
5. Step 5: Solve for x
   x = 59,431,408.89/10,387.53
6. Step 6: Final answer
   x = 5,721.42