Finding the Fourth Proportional to 9,855.96, 13,601.52 and 5,380.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,855.96 : 13,601.52 = 5,380.01 : x
2. Step 2: Convert to fraction form
   9,855.96/13,601.52 = 5,380.01/x
3. Step 3: Cross multiply
   9,855.96x = 13,601.52 × 5,380.01
4. Step 4: Simplify right side
   9,855.96x = 73,176,245.61
5. Step 5: Solve for x
   x = 73,176,245.61/9,855.96
6. Step 6: Final answer
   x = 7,424.57