Finding the Fourth Proportional to 8,312.16, 12,464.16 and 5,196.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,312.16 : 12,464.16 = 5,196.32 : x
2. Step 2: Convert to fraction form
   8,312.16/12,464.16 = 5,196.32/x
3. Step 3: Cross multiply
   8,312.16x = 12,464.16 × 5,196.32
4. Step 4: Simplify right side
   8,312.16x = 64,767,763.89
5. Step 5: Solve for x
   x = 64,767,763.89/8,312.16
6. Step 6: Final answer
   x = 7,791.93