Finding the Fourth Proportional to 9,840.99, 13,580.55 and 5,364.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,840.99 : 13,580.55 = 5,364.73 : x
2. Step 2: Convert to fraction form
   9,840.99/13,580.55 = 5,364.73/x
3. Step 3: Cross multiply
   9,840.99x = 13,580.55 × 5,364.73
4. Step 4: Simplify right side
   9,840.99x = 72,855,984.00
5. Step 5: Solve for x
   x = 72,855,984.00/9,840.99
6. Step 6: Final answer
   x = 7,403.32