Finding the Fourth Proportional to 10,356.72, 15,531.42 and 3,336.45

Step by Step Solution

1. Step 1: Write the proportion equation
   10,356.72 : 15,531.42 = 3,336.45 : x
2. Step 2: Convert to fraction form
   10,356.72/15,531.42 = 3,336.45/x
3. Step 3: Cross multiply
   10,356.72x = 15,531.42 × 3,336.45
4. Step 4: Simplify right side
   10,356.72x = 51,819,806.26
5. Step 5: Solve for x
   x = 51,819,806.26/10,356.72
6. Step 6: Final answer
   x = 5,003.50