Finding the Fourth Proportional to 22,587.95, 31,171.41 and 12,516.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,587.95 : 31,171.41 = 12,516.30 : x
2. Step 2: Convert to fraction form
   22,587.95/31,171.41 = 12,516.30/x
3. Step 3: Cross multiply
   22,587.95x = 31,171.41 × 12,516.30
4. Step 4: Simplify right side
   22,587.95x = 390,150,718.98
5. Step 5: Solve for x
   x = 390,150,718.98/22,587.95
6. Step 6: Final answer
   x = 17,272.51