Finding the Fourth Proportional to 13,081.96, 19,607.82 and 5,685.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.96 : 19,607.82 = 5,685.04 : x
2. Step 2: Convert to fraction form
   13,081.96/19,607.82 = 5,685.04/x
3. Step 3: Cross multiply
   13,081.96x = 19,607.82 × 5,685.04
4. Step 4: Simplify right side
   13,081.96x = 111,471,241.01
5. Step 5: Solve for x
   x = 111,471,241.01/13,081.96
6. Step 6: Final answer
   x = 8,520.99