Finding the Fourth Proportional to 8,854.72, 13,278.53 and 3,921.01

Step by Step Solution

1. Step 1: Write the proportion equation
   8,854.72 : 13,278.53 = 3,921.01 : x
2. Step 2: Convert to fraction form
   8,854.72/13,278.53 = 3,921.01/x
3. Step 3: Cross multiply
   8,854.72x = 13,278.53 × 3,921.01
4. Step 4: Simplify right side
   8,854.72x = 52,065,225.52
5. Step 5: Solve for x
   x = 52,065,225.52/8,854.72
6. Step 6: Final answer
   x = 5,879.94