Finding the Fourth Proportional to 22,809.31, 31,467.90 and 13,247.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,809.31 : 31,467.90 = 13,247.56 : x
2. Step 2: Convert to fraction form
   22,809.31/31,467.90 = 13,247.56/x
3. Step 3: Cross multiply
   22,809.31x = 31,467.90 × 13,247.56
4. Step 4: Simplify right side
   22,809.31x = 416,872,893.32
5. Step 5: Solve for x
   x = 416,872,893.32/22,809.31
6. Step 6: Final answer
   x = 18,276.44