Finding the Fourth Proportional to 7,151.06, 9,855.15 and 5,158.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,151.06 : 9,855.15 = 5,158.10 : x
2. Step 2: Convert to fraction form
   7,151.06/9,855.15 = 5,158.10/x
3. Step 3: Cross multiply
   7,151.06x = 9,855.15 × 5,158.10
4. Step 4: Simplify right side
   7,151.06x = 50,833,849.22
5. Step 5: Solve for x
   x = 50,833,849.22/7,151.06
6. Step 6: Final answer
   x = 7,108.58