Finding the Fourth Proportional to 9,819.80, 13,550.92 and 5,343.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.80 : 13,550.92 = 5,343.56 : x
2. Step 2: Convert to fraction form
   9,819.80/13,550.92 = 5,343.56/x
3. Step 3: Cross multiply
   9,819.80x = 13,550.92 × 5,343.56
4. Step 4: Simplify right side
   9,819.80x = 72,410,123.78
5. Step 5: Solve for x
   x = 72,410,123.78/9,819.80
6. Step 6: Final answer
   x = 7,373.89