Finding the Fourth Proportional to 8,718.96, 12,038.22 and 5,366.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,718.96 : 12,038.22 = 5,366.10 : x
2. Step 2: Convert to fraction form
   8,718.96/12,038.22 = 5,366.10/x
3. Step 3: Cross multiply
   8,718.96x = 12,038.22 × 5,366.10
4. Step 4: Simplify right side
   8,718.96x = 64,598,292.34
5. Step 5: Solve for x
   x = 64,598,292.34/8,718.96
6. Step 6: Final answer
   x = 7,408.94