Finding the Fourth Proportional to 12,993.77, 19,492.69 and 4,226.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,993.77 : 19,492.69 = 4,226.63 : x
2. Step 2: Convert to fraction form
   12,993.77/19,492.69 = 4,226.63/x
3. Step 3: Cross multiply
   12,993.77x = 19,492.69 × 4,226.63
4. Step 4: Simplify right side
   12,993.77x = 82,388,388.33
5. Step 5: Solve for x
   x = 82,388,388.33/12,993.77
6. Step 6: Final answer
   x = 6,340.61