Finding the Fourth Proportional to 5,300.40, 7,316.28 and 3,728.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,300.40 : 7,316.28 = 3,728.88 : x
2. Step 2: Convert to fraction form
   5,300.40/7,316.28 = 3,728.88/x
3. Step 3: Cross multiply
   5,300.40x = 7,316.28 × 3,728.88
4. Step 4: Simplify right side
   5,300.40x = 27,281,530.17
5. Step 5: Solve for x
   x = 27,281,530.17/5,300.40
6. Step 6: Final answer
   x = 5,147.07