Finding the Fourth Proportional to 7,878.72, 11,822.22 and 3,499.32

Step by Step Solution

1. Step 1: Write the proportion equation
   7,878.72 : 11,822.22 = 3,499.32 : x
2. Step 2: Convert to fraction form
   7,878.72/11,822.22 = 3,499.32/x
3. Step 3: Cross multiply
   7,878.72x = 11,822.22 × 3,499.32
4. Step 4: Simplify right side
   7,878.72x = 41,369,730.89
5. Step 5: Solve for x
   x = 41,369,730.89/7,878.72
6. Step 6: Final answer
   x = 5,250.82