Finding the Fourth Proportional to 8,114.25, 11,196.90 and 5,128.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,114.25 : 11,196.90 = 5,128.98 : x
2. Step 2: Convert to fraction form
   8,114.25/11,196.90 = 5,128.98/x
3. Step 3: Cross multiply
   8,114.25x = 11,196.90 × 5,128.98
4. Step 4: Simplify right side
   8,114.25x = 57,428,676.16
5. Step 5: Solve for x
   x = 57,428,676.16/8,114.25
6. Step 6: Final answer
   x = 7,077.51