Finding the Fourth Proportional to 8,111.48, 11,191.88 and 5,592.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.48 : 11,191.88 = 5,592.78 : x
2. Step 2: Convert to fraction form
   8,111.48/11,191.88 = 5,592.78/x
3. Step 3: Cross multiply
   8,111.48x = 11,191.88 × 5,592.78
4. Step 4: Simplify right side
   8,111.48x = 62,593,736.61
5. Step 5: Solve for x
   x = 62,593,736.61/8,111.48
6. Step 6: Final answer
   x = 7,716.69