Finding the Fourth Proportional to 8,316.52, 11,471.70 and 5,665.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,316.52 : 11,471.70 = 5,665.12 : x
2. Step 2: Convert to fraction form
   8,316.52/11,471.70 = 5,665.12/x
3. Step 3: Cross multiply
   8,316.52x = 11,471.70 × 5,665.12
4. Step 4: Simplify right side
   8,316.52x = 64,988,557.10
5. Step 5: Solve for x
   x = 64,988,557.10/8,316.52
6. Step 6: Final answer
   x = 7,814.39