Finding the Fourth Proportional to 12,826.60, 17,695.83 and 7,788.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,826.60 : 17,695.83 = 7,788.92 : x
2. Step 2: Convert to fraction form
   12,826.60/17,695.83 = 7,788.92/x
3. Step 3: Cross multiply
   12,826.60x = 17,695.83 × 7,788.92
4. Step 4: Simplify right side
   12,826.60x = 137,831,344.93
5. Step 5: Solve for x
   x = 137,831,344.93/12,826.60
6. Step 6: Final answer
   x = 10,745.74