Finding the Fourth Proportional to 9,449.47, 13,040.29 and 5,200.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,449.47 : 13,040.29 = 5,200.39 : x
2. Step 2: Convert to fraction form
   9,449.47/13,040.29 = 5,200.39/x
3. Step 3: Cross multiply
   9,449.47x = 13,040.29 × 5,200.39
4. Step 4: Simplify right side
   9,449.47x = 67,814,598.18
5. Step 5: Solve for x
   x = 67,814,598.18/9,449.47
6. Step 6: Final answer
   x = 7,176.55