Finding the Fourth Proportional to 7,038.72, 9,704.60 and 5,148.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,038.72 : 9,704.60 = 5,148.78 : x
2. Step 2: Convert to fraction form
   7,038.72/9,704.60 = 5,148.78/x
3. Step 3: Cross multiply
   7,038.72x = 9,704.60 × 5,148.78
4. Step 4: Simplify right side
   7,038.72x = 49,966,850.39
5. Step 5: Solve for x
   x = 49,966,850.39/7,038.72
6. Step 6: Final answer
   x = 7,098.85