Finding the Fourth Proportional to 12,782.88, 19,168.83 and 4,460.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,782.88 : 19,168.83 = 4,460.40 : x
2. Step 2: Convert to fraction form
   12,782.88/19,168.83 = 4,460.40/x
3. Step 3: Cross multiply
   12,782.88x = 19,168.83 × 4,460.40
4. Step 4: Simplify right side
   12,782.88x = 85,500,649.33
5. Step 5: Solve for x
   x = 85,500,649.33/12,782.88
6. Step 6: Final answer
   x = 6,688.68