Finding the Fourth Proportional to 6,090.10, 8,400.35 and 4,300.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,090.10 : 8,400.35 = 4,300.20 : x
2. Step 2: Convert to fraction form
   6,090.10/8,400.35 = 4,300.20/x
3. Step 3: Cross multiply
   6,090.10x = 8,400.35 × 4,300.20
4. Step 4: Simplify right side
   6,090.10x = 36,123,185.07
5. Step 5: Solve for x
   x = 36,123,185.07/6,090.10
6. Step 6: Final answer
   x = 5,931.46