Finding the Fourth Proportional to 14,053.88, 21,081.94 and 3,665.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,053.88 : 21,081.94 = 3,665.72 : x
2. Step 2: Convert to fraction form
   14,053.88/21,081.94 = 3,665.72/x
3. Step 3: Cross multiply
   14,053.88x = 21,081.94 × 3,665.72
4. Step 4: Simplify right side
   14,053.88x = 77,280,489.10
5. Step 5: Solve for x
   x = 77,280,489.10/14,053.88
6. Step 6: Final answer
   x = 5,498.87