Finding the Fourth Proportional to 22,509.01, 31,062.31 and 12,438.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,509.01 : 31,062.31 = 12,438.15 : x
2. Step 2: Convert to fraction form
   22,509.01/31,062.31 = 12,438.15/x
3. Step 3: Cross multiply
   22,509.01x = 31,062.31 × 12,438.15
4. Step 4: Simplify right side
   22,509.01x = 386,357,671.13
5. Step 5: Solve for x
   x = 386,357,671.13/22,509.01
6. Step 6: Final answer
   x = 17,164.58