Finding the Fourth Proportional to 8,116.72, 12,153.32 and 5,646.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,116.72 : 12,153.32 = 5,646.32 : x
2. Step 2: Convert to fraction form
   8,116.72/12,153.32 = 5,646.32/x
3. Step 3: Cross multiply
   8,116.72x = 12,153.32 × 5,646.32
4. Step 4: Simplify right side
   8,116.72x = 68,621,533.78
5. Step 5: Solve for x
   x = 68,621,533.78/8,116.72
6. Step 6: Final answer
   x = 8,454.34