Finding the Fourth Proportional to 12,081.28, 18,123.68 and 3,762.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,081.28 : 18,123.68 = 3,762.04 : x
2. Step 2: Convert to fraction form
   12,081.28/18,123.68 = 3,762.04/x
3. Step 3: Cross multiply
   12,081.28x = 18,123.68 × 3,762.04
4. Step 4: Simplify right side
   12,081.28x = 68,182,009.11
5. Step 5: Solve for x
   x = 68,182,009.11/12,081.28
6. Step 6: Final answer
   x = 5,643.61