Finding the Fourth Proportional to 8,088.78, 12,132.72 and 3,406.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,088.78 : 12,132.72 = 3,406.80 : x
2. Step 2: Convert to fraction form
   8,088.78/12,132.72 = 3,406.80/x
3. Step 3: Cross multiply
   8,088.78x = 12,132.72 × 3,406.80
4. Step 4: Simplify right side
   8,088.78x = 41,333,750.50
5. Step 5: Solve for x
   x = 41,333,750.50/8,088.78
6. Step 6: Final answer
   x = 5,110.01