Finding the Fourth Proportional to 22,510.16, 31,062.45 and 12,438.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,510.16 : 31,062.45 = 12,438.42 : x
2. Step 2: Convert to fraction form
   22,510.16/31,062.45 = 12,438.42/x
3. Step 3: Cross multiply
   22,510.16x = 31,062.45 × 12,438.42
4. Step 4: Simplify right side
   22,510.16x = 386,367,799.33
5. Step 5: Solve for x
   x = 386,367,799.33/22,510.16
6. Step 6: Final answer
   x = 17,164.15