Finding the Fourth Proportional to 9,830.12, 13,565.48 and 5,353.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,830.12 : 13,565.48 = 5,353.79 : x
2. Step 2: Convert to fraction form
   9,830.12/13,565.48 = 5,353.79/x
3. Step 3: Cross multiply
   9,830.12x = 13,565.48 × 5,353.79
4. Step 4: Simplify right side
   9,830.12x = 72,626,636.57
5. Step 5: Solve for x
   x = 72,626,636.57/9,830.12
6. Step 6: Final answer
   x = 7,388.18