Finding the Fourth Proportional to 22,587.30, 31,170.06 and 12,515.52

Step by Step Solution

1. Step 1: Write the proportion equation
   22,587.30 : 31,170.06 = 12,515.52 : x
2. Step 2: Convert to fraction form
   22,587.30/31,170.06 = 12,515.52/x
3. Step 3: Cross multiply
   22,587.30x = 31,170.06 × 12,515.52
4. Step 4: Simplify right side
   22,587.30x = 390,109,509.33
5. Step 5: Solve for x
   x = 390,109,509.33/22,587.30
6. Step 6: Final answer
   x = 17,271.19