Finding the Fourth Proportional to 8,880.66, 12,258.83 and 5,343.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,880.66 : 12,258.83 = 5,343.20 : x
2. Step 2: Convert to fraction form
   8,880.66/12,258.83 = 5,343.20/x
3. Step 3: Cross multiply
   8,880.66x = 12,258.83 × 5,343.20
4. Step 4: Simplify right side
   8,880.66x = 65,501,292.45
5. Step 5: Solve for x
   x = 65,501,292.45/8,880.66
6. Step 6: Final answer
   x = 7,375.72