Finding the Fourth Proportional to 4,061.61, 6,086.04 and 3,139.43

Step by Step Solution

1. Step 1: Write the proportion equation
   4,061.61 : 6,086.04 = 3,139.43 : x
2. Step 2: Convert to fraction form
   4,061.61/6,086.04 = 3,139.43/x
3. Step 3: Cross multiply
   4,061.61x = 6,086.04 × 3,139.43
4. Step 4: Simplify right side
   4,061.61x = 19,106,654.35
5. Step 5: Solve for x
   x = 19,106,654.35/4,061.61
6. Step 6: Final answer
   x = 4,704.21