Finding the Fourth Proportional to 10,921.37, 16,385.51 and 3,901.23

Step by Step Solution

1. Step 1: Write the proportion equation
   10,921.37 : 16,385.51 = 3,901.23 : x
2. Step 2: Convert to fraction form
   10,921.37/16,385.51 = 3,901.23/x
3. Step 3: Cross multiply
   10,921.37x = 16,385.51 × 3,901.23
4. Step 4: Simplify right side
   10,921.37x = 63,923,623.67
5. Step 5: Solve for x
   x = 63,923,623.67/10,921.37
6. Step 6: Final answer
   x = 5,853.08