Finding the Fourth Proportional to 12,587.71, 18,880.35 and 3,822.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,587.71 : 18,880.35 = 3,822.70 : x
2. Step 2: Convert to fraction form
   12,587.71/18,880.35 = 3,822.70/x
3. Step 3: Cross multiply
   12,587.71x = 18,880.35 × 3,822.70
4. Step 4: Simplify right side
   12,587.71x = 72,173,894.83
5. Step 5: Solve for x
   x = 72,173,894.83/12,587.71
6. Step 6: Final answer
   x = 5,733.68