Finding the Fourth Proportional to 12,586.53, 18,878.57 and 3,821.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,586.53 : 18,878.57 = 3,821.52 : x
2. Step 2: Convert to fraction form
   12,586.53/18,878.57 = 3,821.52/x
3. Step 3: Cross multiply
   12,586.53x = 18,878.57 × 3,821.52
4. Step 4: Simplify right side
   12,586.53x = 72,144,832.83
5. Step 5: Solve for x
   x = 72,144,832.83/12,586.53
6. Step 6: Final answer
   x = 5,731.91