Finding the Fourth Proportional to 7,333.68, 10,120.50 and 4,189.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,333.68 : 10,120.50 = 4,189.80 : x
2. Step 2: Convert to fraction form
   7,333.68/10,120.50 = 4,189.80/x
3. Step 3: Cross multiply
   7,333.68x = 10,120.50 × 4,189.80
4. Step 4: Simplify right side
   7,333.68x = 42,402,870.90
5. Step 5: Solve for x
   x = 42,402,870.90/7,333.68
6. Step 6: Final answer
   x = 5,781.94