Finding the Fourth Proportional to 8,782.31, 12,115.34 and 5,196.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,782.31 : 12,115.34 = 5,196.29 : x
2. Step 2: Convert to fraction form
   8,782.31/12,115.34 = 5,196.29/x
3. Step 3: Cross multiply
   8,782.31x = 12,115.34 × 5,196.29
4. Step 4: Simplify right side
   8,782.31x = 62,954,863.37
5. Step 5: Solve for x
   x = 62,954,863.37/8,782.31
6. Step 6: Final answer
   x = 7,168.37