Finding the Fourth Proportional to 12,587.00, 18,880.90 and 3,821.99

Step by Step Solution

1. Step 1: Write the proportion equation
   12,587.00 : 18,880.90 = 3,821.99 : x
2. Step 2: Convert to fraction form
   12,587.00/18,880.90 = 3,821.99/x
3. Step 3: Cross multiply
   12,587.00x = 18,880.90 × 3,821.99
4. Step 4: Simplify right side
   12,587.00x = 72,162,507.03
5. Step 5: Solve for x
   x = 72,162,507.03/12,587.00
6. Step 6: Final answer
   x = 5,733.10