Finding the Fourth Proportional to 8,699.16, 12,004.88 and 5,162.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,699.16 : 12,004.88 = 5,162.28 : x
2. Step 2: Convert to fraction form
   8,699.16/12,004.88 = 5,162.28/x
3. Step 3: Cross multiply
   8,699.16x = 12,004.88 × 5,162.28
4. Step 4: Simplify right side
   8,699.16x = 61,972,551.93
5. Step 5: Solve for x
   x = 61,972,551.93/8,699.16
6. Step 6: Final answer
   x = 7,123.97