Finding the Fourth Proportional to 7,174.72, 9,900.02 and 4,030.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,174.72 : 9,900.02 = 4,030.28 : x
2. Step 2: Convert to fraction form
   7,174.72/9,900.02 = 4,030.28/x
3. Step 3: Cross multiply
   7,174.72x = 9,900.02 × 4,030.28
4. Step 4: Simplify right side
   7,174.72x = 39,899,852.61
5. Step 5: Solve for x
   x = 39,899,852.61/7,174.72
6. Step 6: Final answer
   x = 5,561.17