Finding the Fourth Proportional to 5,111.22, 7,056.38 and 3,320.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,111.22 : 7,056.38 = 3,320.31 : x
2. Step 2: Convert to fraction form
   5,111.22/7,056.38 = 3,320.31/x
3. Step 3: Cross multiply
   5,111.22x = 7,056.38 × 3,320.31
4. Step 4: Simplify right side
   5,111.22x = 23,429,369.08
5. Step 5: Solve for x
   x = 23,429,369.08/5,111.22
6. Step 6: Final answer
   x = 4,583.91