Finding the Fourth Proportional to 4,730.72, 7,090.50 and 2,784.20

Step by Step Solution

1. Step 1: Write the proportion equation
   4,730.72 : 7,090.50 = 2,784.20 : x
2. Step 2: Convert to fraction form
   4,730.72/7,090.50 = 2,784.20/x
3. Step 3: Cross multiply
   4,730.72x = 7,090.50 × 2,784.20
4. Step 4: Simplify right side
   4,730.72x = 19,741,370.10
5. Step 5: Solve for x
   x = 19,741,370.10/4,730.72
6. Step 6: Final answer
   x = 4,173.02