Finding the Fourth Proportional to 8,109.96, 12,155.24 and 5,300.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109.96 : 12,155.24 = 5,300.15 : x
2. Step 2: Convert to fraction form
   8,109.96/12,155.24 = 5,300.15/x
3. Step 3: Cross multiply
   8,109.96x = 12,155.24 × 5,300.15
4. Step 4: Simplify right side
   8,109.96x = 64,424,508.01
5. Step 5: Solve for x
   x = 64,424,508.01/8,109.96
6. Step 6: Final answer
   x = 7,943.87