Finding the Fourth Proportional to 9,321.96, 13,978.82 and 4,938.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,321.96 : 13,978.82 = 4,938.38 : x
2. Step 2: Convert to fraction form
   9,321.96/13,978.82 = 4,938.38/x
3. Step 3: Cross multiply
   9,321.96x = 13,978.82 × 4,938.38
4. Step 4: Simplify right side
   9,321.96x = 69,032,655.22
5. Step 5: Solve for x
   x = 69,032,655.22/9,321.96
6. Step 6: Final answer
   x = 7,405.38