Finding the Fourth Proportional to 3,885.57, 5,832.46 and 2,130.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,885.57 : 5,832.46 = 2,130.50 : x
2. Step 2: Convert to fraction form
   3,885.57/5,832.46 = 2,130.50/x
3. Step 3: Cross multiply
   3,885.57x = 5,832.46 × 2,130.50
4. Step 4: Simplify right side
   3,885.57x = 12,426,061.29
5. Step 5: Solve for x
   x = 12,426,061.29/3,885.57
6. Step 6: Final answer
   x = 3,198.00