Finding the Fourth Proportional to 9,840.22, 13,579.89 and 5,364.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,840.22 : 13,579.89 = 5,364.02 : x
2. Step 2: Convert to fraction form
   9,840.22/13,579.89 = 5,364.02/x
3. Step 3: Cross multiply
   9,840.22x = 13,579.89 × 5,364.02
4. Step 4: Simplify right side
   9,840.22x = 72,842,815.39
5. Step 5: Solve for x
   x = 72,842,815.39/9,840.22
6. Step 6: Final answer
   x = 7,402.56