Finding the Fourth Proportional to 9,993.57, 13,772.61 and 7,471.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,993.57 : 13,772.61 = 7,471.23 : x
2. Step 2: Convert to fraction form
   9,993.57/13,772.61 = 7,471.23/x
3. Step 3: Cross multiply
   9,993.57x = 13,772.61 × 7,471.23
4. Step 4: Simplify right side
   9,993.57x = 102,898,337.01
5. Step 5: Solve for x
   x = 102,898,337.01/9,993.57
6. Step 6: Final answer
   x = 10,296.45