Finding the Fourth Proportional to 8,113.89, 12,155.05 and 5,332.11

Step by Step Solution

1. Step 1: Write the proportion equation
   8,113.89 : 12,155.05 = 5,332.11 : x
2. Step 2: Convert to fraction form
   8,113.89/12,155.05 = 5,332.11/x
3. Step 3: Cross multiply
   8,113.89x = 12,155.05 × 5,332.11
4. Step 4: Simplify right side
   8,113.89x = 64,812,063.66
5. Step 5: Solve for x
   x = 64,812,063.66/8,113.89
6. Step 6: Final answer
   x = 7,987.79