Finding the Fourth Proportional to 22,487.25, 31,031.59 and 12,415.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,487.25 : 31,031.59 = 12,415.48 : x
2. Step 2: Convert to fraction form
   22,487.25/31,031.59 = 12,415.48/x
3. Step 3: Cross multiply
   22,487.25x = 31,031.59 × 12,415.48
4. Step 4: Simplify right side
   22,487.25x = 385,272,085.01
5. Step 5: Solve for x
   x = 385,272,085.01/22,487.25
6. Step 6: Final answer
   x = 17,132.91