Finding the Fourth Proportional to 7,459.72, 10,288.82 and 7,128.84

Step by Step Solution

1. Step 1: Write the proportion equation
   7,459.72 : 10,288.82 = 7,128.84 : x
2. Step 2: Convert to fraction form
   7,459.72/10,288.82 = 7,128.84/x
3. Step 3: Cross multiply
   7,459.72x = 10,288.82 × 7,128.84
4. Step 4: Simplify right side
   7,459.72x = 73,347,351.57
5. Step 5: Solve for x
   x = 73,347,351.57/7,459.72
6. Step 6: Final answer
   x = 9,832.45