Finding the Fourth Proportional to 4,900.05, 7,343.01 and 3,139.56

Step by Step Solution

1. Step 1: Write the proportion equation
   4,900.05 : 7,343.01 = 3,139.56 : x
2. Step 2: Convert to fraction form
   4,900.05/7,343.01 = 3,139.56/x
3. Step 3: Cross multiply
   4,900.05x = 7,343.01 × 3,139.56
4. Step 4: Simplify right side
   4,900.05x = 23,053,820.48
5. Step 5: Solve for x
   x = 23,053,820.48/4,900.05
6. Step 6: Final answer
   x = 4,704.81