Finding the Fourth Proportional to 14,081.78, 21,123.81 and 3,693.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,081.78 : 21,123.81 = 3,693.50 : x
2. Step 2: Convert to fraction form
   14,081.78/21,123.81 = 3,693.50/x
3. Step 3: Cross multiply
   14,081.78x = 21,123.81 × 3,693.50
4. Step 4: Simplify right side
   14,081.78x = 78,020,792.24
5. Step 5: Solve for x
   x = 78,020,792.24/14,081.78
6. Step 6: Final answer
   x = 5,540.55