Finding the Fourth Proportional to 14,258.56, 19,676 and 7,884.78

Step by Step Solution

1. Step 1: Write the proportion equation
   14,258.56 : 19,676 = 7,884.78 : x
2. Step 2: Convert to fraction form
   14,258.56/19,676 = 7,884.78/x
3. Step 3: Cross multiply
   14,258.56x = 19,676 × 7,884.78
4. Step 4: Simplify right side
   14,258.56x = 155,140,931.28
5. Step 5: Solve for x
   x = 155,140,931.28/14,258.56
6. Step 6: Final answer
   x = 10,880.55