Finding the Fourth Proportional to 6,090.43, 8,403.69 and 3,699.91

Step by Step Solution

1. Step 1: Write the proportion equation
   6,090.43 : 8,403.69 = 3,699.91 : x
2. Step 2: Convert to fraction form
   6,090.43/8,403.69 = 3,699.91/x
3. Step 3: Cross multiply
   6,090.43x = 8,403.69 × 3,699.91
4. Step 4: Simplify right side
   6,090.43x = 31,092,896.67
5. Step 5: Solve for x
   x = 31,092,896.67/6,090.43
6. Step 6: Final answer
   x = 5,105.21