Finding the Fourth Proportional to 21,074.01, 31,612.89 and 5,491.77

Step by Step Solution

1. Step 1: Write the proportion equation
   21,074.01 : 31,612.89 = 5,491.77 : x
2. Step 2: Convert to fraction form
   21,074.01/31,612.89 = 5,491.77/x
3. Step 3: Cross multiply
   21,074.01x = 31,612.89 × 5,491.77
4. Step 4: Simplify right side
   21,074.01x = 173,610,720.92
5. Step 5: Solve for x
   x = 173,610,720.92/21,074.01
6. Step 6: Final answer
   x = 8,238.14