Finding the Fourth Proportional to 7,123.60, 9,833.84 and 5,355.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,123.60 : 9,833.84 = 5,355.80 : x
2. Step 2: Convert to fraction form
   7,123.60/9,833.84 = 5,355.80/x
3. Step 3: Cross multiply
   7,123.60x = 9,833.84 × 5,355.80
4. Step 4: Simplify right side
   7,123.60x = 52,668,080.27
5. Step 5: Solve for x
   x = 52,668,080.27/7,123.60
6. Step 6: Final answer
   x = 7,393.46