Finding the Fourth Proportional to 8,878.02, 12,260.79 and 7,371.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,878.02 : 12,260.79 = 7,371.05 : x
2. Step 2: Convert to fraction form
   8,878.02/12,260.79 = 7,371.05/x
3. Step 3: Cross multiply
   8,878.02x = 12,260.79 × 7,371.05
4. Step 4: Simplify right side
   8,878.02x = 90,374,834.83
5. Step 5: Solve for x
   x = 90,374,834.83/8,878.02
6. Step 6: Final answer
   x = 10,179.62