Finding the Fourth Proportional to 22,479.88, 31,026.42 and 12,925.36

Step by Step Solution

1. Step 1: Write the proportion equation
   22,479.88 : 31,026.42 = 12,925.36 : x
2. Step 2: Convert to fraction form
   22,479.88/31,026.42 = 12,925.36/x
3. Step 3: Cross multiply
   22,479.88x = 31,026.42 × 12,925.36
4. Step 4: Simplify right side
   22,479.88x = 401,027,648.01
5. Step 5: Solve for x
   x = 401,027,648.01/22,479.88
6. Step 6: Final answer
   x = 17,839.40