Finding the Fourth Proportional to 8,111.89, 12,152.05 and 5,330.11

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.89 : 12,152.05 = 5,330.11 : x
2. Step 2: Convert to fraction form
   8,111.89/12,152.05 = 5,330.11/x
3. Step 3: Cross multiply
   8,111.89x = 12,152.05 × 5,330.11
4. Step 4: Simplify right side
   8,111.89x = 64,771,763.23
5. Step 5: Solve for x
   x = 64,771,763.23/8,111.89
6. Step 6: Final answer
   x = 7,984.79