Finding the Fourth Proportional to 8,109.02, 12,139.83 and 7,330.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109.02 : 12,139.83 = 7,330.81 : x
2. Step 2: Convert to fraction form
   8,109.02/12,139.83 = 7,330.81/x
3. Step 3: Cross multiply
   8,109.02x = 12,139.83 × 7,330.81
4. Step 4: Simplify right side
   8,109.02x = 88,994,787.16
5. Step 5: Solve for x
   x = 88,994,787.16/8,109.02
6. Step 6: Final answer
   x = 10,974.79