Finding the Fourth Proportional to 7,407.72, 10,214.96 and 5,729.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,407.72 : 10,214.96 = 5,729.40 : x
2. Step 2: Convert to fraction form
   7,407.72/10,214.96 = 5,729.40/x
3. Step 3: Cross multiply
   7,407.72x = 10,214.96 × 5,729.40
4. Step 4: Simplify right side
   7,407.72x = 58,525,591.82
5. Step 5: Solve for x
   x = 58,525,591.82/7,407.72
6. Step 6: Final answer
   x = 7,900.62