Finding the Fourth Proportional to 7,328.78, 10,113.36 and 4,185.98

Step by Step Solution

1. Step 1: Write the proportion equation
   7,328.78 : 10,113.36 = 4,185.98 : x
2. Step 2: Convert to fraction form
   7,328.78/10,113.36 = 4,185.98/x
3. Step 3: Cross multiply
   7,328.78x = 10,113.36 × 4,185.98
4. Step 4: Simplify right side
   7,328.78x = 42,334,322.69
5. Step 5: Solve for x
   x = 42,334,322.69/7,328.78
6. Step 6: Final answer
   x = 5,776.45