Finding the Fourth Proportional to 12,722.37, 19,085.29 and 4,400.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,722.37 : 19,085.29 = 4,400.15 : x
2. Step 2: Convert to fraction form
   12,722.37/19,085.29 = 4,400.15/x
3. Step 3: Cross multiply
   12,722.37x = 19,085.29 × 4,400.15
4. Step 4: Simplify right side
   12,722.37x = 83,978,116.79
5. Step 5: Solve for x
   x = 83,978,116.79/12,722.37
6. Step 6: Final answer
   x = 6,600.82