Finding the Fourth Proportional to 10,906.68, 16,365.40 and 4,332.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,906.68 : 16,365.40 = 4,332.72 : x
2. Step 2: Convert to fraction form
   10,906.68/16,365.40 = 4,332.72/x
3. Step 3: Cross multiply
   10,906.68x = 16,365.40 × 4,332.72
4. Step 4: Simplify right side
   10,906.68x = 70,906,695.89
5. Step 5: Solve for x
   x = 70,906,695.89/10,906.68
6. Step 6: Final answer
   x = 6,501.22