Finding the Fourth Proportional to 10,648.83, 15,976.32 and 4,407.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,648.83 : 15,976.32 = 4,407.69 : x
2. Step 2: Convert to fraction form
   10,648.83/15,976.32 = 4,407.69/x
3. Step 3: Cross multiply
   10,648.83x = 15,976.32 × 4,407.69
4. Step 4: Simplify right side
   10,648.83x = 70,418,665.90
5. Step 5: Solve for x
   x = 70,418,665.90/10,648.83
6. Step 6: Final answer
   x = 6,612.81