Finding the Fourth Proportional to 12,746.22, 19,111.74 and 5,247.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,746.22 : 19,111.74 = 5,247.60 : x
2. Step 2: Convert to fraction form
   12,746.22/19,111.74 = 5,247.60/x
3. Step 3: Cross multiply
   12,746.22x = 19,111.74 × 5,247.60
4. Step 4: Simplify right side
   12,746.22x = 100,290,766.82
5. Step 5: Solve for x
   x = 100,290,766.82/12,746.22
6. Step 6: Final answer
   x = 7,868.28