Finding the Fourth Proportional to 9,803.78, 13,529.28 and 5,327.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,803.78 : 13,529.28 = 5,327.57 : x
2. Step 2: Convert to fraction form
   9,803.78/13,529.28 = 5,327.57/x
3. Step 3: Cross multiply
   9,803.78x = 13,529.28 × 5,327.57
4. Step 4: Simplify right side
   9,803.78x = 72,078,186.25
5. Step 5: Solve for x
   x = 72,078,186.25/9,803.78
6. Step 6: Final answer
   x = 7,352.08