Finding the Fourth Proportional to 12,083.47, 18,128.35 and 3,763.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,083.47 : 18,128.35 = 3,763.63 : x
2. Step 2: Convert to fraction form
   12,083.47/18,128.35 = 3,763.63/x
3. Step 3: Cross multiply
   12,083.47x = 18,128.35 × 3,763.63
4. Step 4: Simplify right side
   12,083.47x = 68,228,301.86
5. Step 5: Solve for x
   x = 68,228,301.86/12,083.47
6. Step 6: Final answer
   x = 5,646.42