Finding the Fourth Proportional to 22,530.31, 31,091.99 and 12,321.39

Step by Step Solution

1. Step 1: Write the proportion equation
   22,530.31 : 31,091.99 = 12,321.39 : x
2. Step 2: Convert to fraction form
   22,530.31/31,091.99 = 12,321.39/x
3. Step 3: Cross multiply
   22,530.31x = 31,091.99 × 12,321.39
4. Step 4: Simplify right side
   22,530.31x = 383,096,317.60
5. Step 5: Solve for x
   x = 383,096,317.60/22,530.31
6. Step 6: Final answer
   x = 17,003.60