Finding the Fourth Proportional to 3,899.52, 5,799.13 and 3,776.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,899.52 : 5,799.13 = 3,776.47 : x
2. Step 2: Convert to fraction form
   3,899.52/5,799.13 = 3,776.47/x
3. Step 3: Cross multiply
   3,899.52x = 5,799.13 × 3,776.47
4. Step 4: Simplify right side
   3,899.52x = 21,900,240.47
5. Step 5: Solve for x
   x = 21,900,240.47/3,899.52
6. Step 6: Final answer
   x = 5,616.14