Finding the Fourth Proportional to 10,161.32, 14,022.30 and 5,685.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,161.32 : 14,022.30 = 5,685.15 : x
2. Step 2: Convert to fraction form
   10,161.32/14,022.30 = 5,685.15/x
3. Step 3: Cross multiply
   10,161.32x = 14,022.30 × 5,685.15
4. Step 4: Simplify right side
   10,161.32x = 79,718,878.85
5. Step 5: Solve for x
   x = 79,718,878.85/10,161.32
6. Step 6: Final answer
   x = 7,845.33