Finding the Fourth Proportional to 5,921.12, 8,111.81 and 5,699.54

Step by Step Solution

1. Step 1: Write the proportion equation
   5,921.12 : 8,111.81 = 5,699.54 : x
2. Step 2: Convert to fraction form
   5,921.12/8,111.81 = 5,699.54/x
3. Step 3: Cross multiply
   5,921.12x = 8,111.81 × 5,699.54
4. Step 4: Simplify right side
   5,921.12x = 46,233,585.57
5. Step 5: Solve for x
   x = 46,233,585.57/5,921.12
6. Step 6: Final answer
   x = 7,808.25