Finding the Fourth Proportional to 9,327.78, 12,868.29 and 5,347.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,327.78 : 12,868.29 = 5,347.98 : x
2. Step 2: Convert to fraction form
   9,327.78/12,868.29 = 5,347.98/x
3. Step 3: Cross multiply
   9,327.78x = 12,868.29 × 5,347.98
4. Step 4: Simplify right side
   9,327.78x = 68,819,357.55
5. Step 5: Solve for x
   x = 68,819,357.55/9,327.78
6. Step 6: Final answer
   x = 7,377.89