Finding the Fourth Proportional to 8,928.72, 12,308.22 and 5,938.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,928.72 : 12,308.22 = 5,938.20 : x
2. Step 2: Convert to fraction form
   8,928.72/12,308.22 = 5,938.20/x
3. Step 3: Cross multiply
   8,928.72x = 12,308.22 × 5,938.20
4. Step 4: Simplify right side
   8,928.72x = 73,088,672.00
5. Step 5: Solve for x
   x = 73,088,672.00/8,928.72
6. Step 6: Final answer
   x = 8,185.80