Finding the Fourth Proportional to 10,993.72, 16,490.64 and 3,598.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,993.72 : 16,490.64 = 3,598.12 : x
2. Step 2: Convert to fraction form
   10,993.72/16,490.64 = 3,598.12/x
3. Step 3: Cross multiply
   10,993.72x = 16,490.64 × 3,598.12
4. Step 4: Simplify right side
   10,993.72x = 59,335,301.60
5. Step 5: Solve for x
   x = 59,335,301.60/10,993.72
6. Step 6: Final answer
   x = 5,397.20