Finding the Fourth Proportional to 10,151.15, 15,216.51 and 4,231.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,151.15 : 15,216.51 = 4,231.32 : x
2. Step 2: Convert to fraction form
   10,151.15/15,216.51 = 4,231.32/x
3. Step 3: Cross multiply
   10,151.15x = 15,216.51 × 4,231.32
4. Step 4: Simplify right side
   10,151.15x = 64,385,852.91
5. Step 5: Solve for x
   x = 64,385,852.91/10,151.15
6. Step 6: Final answer
   x = 6,342.71