Finding the Fourth Proportional to 22,509.51, 31,062.69 and 12,438.06

Step by Step Solution

1. Step 1: Write the proportion equation
   22,509.51 : 31,062.69 = 12,438.06 : x
2. Step 2: Convert to fraction form
   22,509.51/31,062.69 = 12,438.06/x
3. Step 3: Cross multiply
   22,509.51x = 31,062.69 × 12,438.06
4. Step 4: Simplify right side
   22,509.51x = 386,359,601.98
5. Step 5: Solve for x
   x = 386,359,601.98/22,509.51
6. Step 6: Final answer
   x = 17,164.28