Finding the Fourth Proportional to 9,839.18, 13,578.12 and 5,362.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,839.18 : 13,578.12 = 5,362.94 : x
2. Step 2: Convert to fraction form
   9,839.18/13,578.12 = 5,362.94/x
3. Step 3: Cross multiply
   9,839.18x = 13,578.12 × 5,362.94
4. Step 4: Simplify right side
   9,839.18x = 72,818,642.87
5. Step 5: Solve for x
   x = 72,818,642.87/9,839.18
6. Step 6: Final answer
   x = 7,400.89