Finding the Fourth Proportional to 5,851.98, 8,091.28 and 5,113.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,851.98 : 8,091.28 = 5,113.86 : x
2. Step 2: Convert to fraction form
   5,851.98/8,091.28 = 5,113.86/x
3. Step 3: Cross multiply
   5,851.98x = 8,091.28 × 5,113.86
4. Step 4: Simplify right side
   5,851.98x = 41,377,673.14
5. Step 5: Solve for x
   x = 41,377,673.14/5,851.98
6. Step 6: Final answer
   x = 7,070.71