Finding the Fourth Proportional to 10,533.69, 15,799.67 and 3,138.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,533.69 : 15,799.67 = 3,138.15 : x
2. Step 2: Convert to fraction form
   10,533.69/15,799.67 = 3,138.15/x
3. Step 3: Cross multiply
   10,533.69x = 15,799.67 × 3,138.15
4. Step 4: Simplify right side
   10,533.69x = 49,581,734.41
5. Step 5: Solve for x
   x = 49,581,734.41/10,533.69
6. Step 6: Final answer
   x = 4,706.97