Finding the Fourth Proportional to 31,321.22, 43,280.55 and 22,808.53

Step by Step Solution

1. Step 1: Write the proportion equation
   31,321.22 : 43,280.55 = 22,808.53 : x
2. Step 2: Convert to fraction form
   31,321.22/43,280.55 = 22,808.53/x
3. Step 3: Cross multiply
   31,321.22x = 43,280.55 × 22,808.53
4. Step 4: Simplify right side
   31,321.22x = 987,165,614.89
5. Step 5: Solve for x
   x = 987,165,614.89/31,321.22
6. Step 6: Final answer
   x = 31,517.47