Finding the Fourth Proportional to 5,139.74, 7,718.52 and 4,906.01

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.74 : 7,718.52 = 4,906.01 : x
2. Step 2: Convert to fraction form
   5,139.74/7,718.52 = 4,906.01/x
3. Step 3: Cross multiply
   5,139.74x = 7,718.52 × 4,906.01
4. Step 4: Simplify right side
   5,139.74x = 37,867,097.71
5. Step 5: Solve for x
   x = 37,867,097.71/5,139.74
6. Step 6: Final answer
   x = 7,367.52