Finding the Fourth Proportional to 8,469.57, 11,688.42 and 5,112.33

Step by Step Solution

1. Step 1: Write the proportion equation
   8,469.57 : 11,688.42 = 5,112.33 : x
2. Step 2: Convert to fraction form
   8,469.57/11,688.42 = 5,112.33/x
3. Step 3: Cross multiply
   8,469.57x = 11,688.42 × 5,112.33
4. Step 4: Simplify right side
   8,469.57x = 59,755,060.22
5. Step 5: Solve for x
   x = 59,755,060.22/8,469.57
6. Step 6: Final answer
   x = 7,055.26