Finding the Fourth Proportional to 10,113.37, 15,159.79 and 3,871.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,113.37 : 15,159.79 = 3,871.78 : x
2. Step 2: Convert to fraction form
   10,113.37/15,159.79 = 3,871.78/x
3. Step 3: Cross multiply
   10,113.37x = 15,159.79 × 3,871.78
4. Step 4: Simplify right side
   10,113.37x = 58,695,371.73
5. Step 5: Solve for x
   x = 58,695,371.73/10,113.37
6. Step 6: Final answer
   x = 5,803.74