Finding the Fourth Proportional to 9,838.99, 13,577.85 and 5,362.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,838.99 : 13,577.85 = 5,362.78 : x
2. Step 2: Convert to fraction form
   9,838.99/13,577.85 = 5,362.78/x
3. Step 3: Cross multiply
   9,838.99x = 13,577.85 × 5,362.78
4. Step 4: Simplify right side
   9,838.99x = 72,815,022.42
5. Step 5: Solve for x
   x = 72,815,022.42/9,838.99
6. Step 6: Final answer
   x = 7,400.66