Finding the Fourth Proportional to 7,200.78, 10,792.26 and 3,499.98

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200.78 : 10,792.26 = 3,499.98 : x
2. Step 2: Convert to fraction form
   7,200.78/10,792.26 = 3,499.98/x
3. Step 3: Cross multiply
   7,200.78x = 10,792.26 × 3,499.98
4. Step 4: Simplify right side
   7,200.78x = 37,772,694.15
5. Step 5: Solve for x
   x = 37,772,694.15/7,200.78
6. Step 6: Final answer
   x = 5,245.64