Finding the Fourth Proportional to 7,722.15, 10,656.59 and 4,185.35

Step by Step Solution

1. Step 1: Write the proportion equation
   7,722.15 : 10,656.59 = 4,185.35 : x
2. Step 2: Convert to fraction form
   7,722.15/10,656.59 = 4,185.35/x
3. Step 3: Cross multiply
   7,722.15x = 10,656.59 × 4,185.35
4. Step 4: Simplify right side
   7,722.15x = 44,601,484.75
5. Step 5: Solve for x
   x = 44,601,484.75/7,722.15
6. Step 6: Final answer
   x = 5,775.79