Finding the Fourth Proportional to 10,047.20, 13,864.72 and 5,509.84

Step by Step Solution

1. Step 1: Write the proportion equation
   10,047.20 : 13,864.72 = 5,509.84 : x
2. Step 2: Convert to fraction form
   10,047.20/13,864.72 = 5,509.84/x
3. Step 3: Cross multiply
   10,047.20x = 13,864.72 × 5,509.84
4. Step 4: Simplify right side
   10,047.20x = 76,392,388.84
5. Step 5: Solve for x
   x = 76,392,388.84/10,047.20
6. Step 6: Final answer
   x = 7,603.35