Finding the Fourth Proportional to 3,693.51, 5,499.07 and 3,641.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,693.51 : 5,499.07 = 3,641.81 : x
2. Step 2: Convert to fraction form
   3,693.51/5,499.07 = 3,641.81/x
3. Step 3: Cross multiply
   3,693.51x = 5,499.07 × 3,641.81
4. Step 4: Simplify right side
   3,693.51x = 20,026,531.52
5. Step 5: Solve for x
   x = 20,026,531.52/3,693.51
6. Step 6: Final answer
   x = 5,422.09