Finding the Fourth Proportional to 9,840.95, 13,580.37 and 5,364.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,840.95 : 13,580.37 = 5,364.72 : x
2. Step 2: Convert to fraction form
   9,840.95/13,580.37 = 5,364.72/x
3. Step 3: Cross multiply
   9,840.95x = 13,580.37 × 5,364.72
4. Step 4: Simplify right side
   9,840.95x = 72,854,882.55
5. Step 5: Solve for x
   x = 72,854,882.55/9,840.95
6. Step 6: Final answer
   x = 7,403.24