Finding the Fourth Proportional to 5,100.42, 7,038.77 and 3,109.58

Step by Step Solution

1. Step 1: Write the proportion equation
   5,100.42 : 7,038.77 = 3,109.58 : x
2. Step 2: Convert to fraction form
   5,100.42/7,038.77 = 3,109.58/x
3. Step 3: Cross multiply
   5,100.42x = 7,038.77 × 3,109.58
4. Step 4: Simplify right side
   5,100.42x = 21,887,567.67
5. Step 5: Solve for x
   x = 21,887,567.67/5,100.42
6. Step 6: Final answer
   x = 4,291.33