Finding the Fourth Proportional to 5,899.47, 8,139.80 and 3,745.23

Step by Step Solution

1. Step 1: Write the proportion equation
   5,899.47 : 8,139.80 = 3,745.23 : x
2. Step 2: Convert to fraction form
   5,899.47/8,139.80 = 3,745.23/x
3. Step 3: Cross multiply
   5,899.47x = 8,139.80 × 3,745.23
4. Step 4: Simplify right side
   5,899.47x = 30,485,404.43
5. Step 5: Solve for x
   x = 30,485,404.43/5,899.47
6. Step 6: Final answer
   x = 5,167.48