Finding the Fourth Proportional to 8,155.72, 12,212.81 and 5,373.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,155.72 : 12,212.81 = 5,373.96 : x
2. Step 2: Convert to fraction form
   8,155.72/12,212.81 = 5,373.96/x
3. Step 3: Cross multiply
   8,155.72x = 12,212.81 × 5,373.96
4. Step 4: Simplify right side
   8,155.72x = 65,631,079.76
5. Step 5: Solve for x
   x = 65,631,079.76/8,155.72
6. Step 6: Final answer
   x = 8,047.25