Finding the Fourth Proportional to 8,112.72, 11,196.38 and 5,090

Step by Step Solution

1. Step 1: Write the proportion equation
   8,112.72 : 11,196.38 = 5,090 : x
2. Step 2: Convert to fraction form
   8,112.72/11,196.38 = 5,090/x
3. Step 3: Cross multiply
   8,112.72x = 11,196.38 × 5,090
4. Step 4: Simplify right side
   8,112.72x = 56,989,574.20
5. Step 5: Solve for x
   x = 56,989,574.20/8,112.72
6. Step 6: Final answer
   x = 7,024.72