Finding the Fourth Proportional to 5,288.50, 7,932.72 and 3,111.08

Step by Step Solution

1. Step 1: Write the proportion equation
   5,288.50 : 7,932.72 = 3,111.08 : x
2. Step 2: Convert to fraction form
   5,288.50/7,932.72 = 3,111.08/x
3. Step 3: Cross multiply
   5,288.50x = 7,932.72 × 3,111.08
4. Step 4: Simplify right side
   5,288.50x = 24,679,326.54
5. Step 5: Solve for x
   x = 24,679,326.54/5,288.50
6. Step 6: Final answer
   x = 4,666.61