Finding the Fourth Proportional to 22,486.54, 31,031.25 and 12,415

Step by Step Solution

1. Step 1: Write the proportion equation
   22,486.54 : 31,031.25 = 12,415 : x
2. Step 2: Convert to fraction form
   22,486.54/31,031.25 = 12,415/x
3. Step 3: Cross multiply
   22,486.54x = 31,031.25 × 12,415
4. Step 4: Simplify right side
   22,486.54x = 385,252,968.75
5. Step 5: Solve for x
   x = 385,252,968.75/22,486.54
6. Step 6: Final answer
   x = 17,132.60