Finding the Fourth Proportional to 3,947,377.43, 5,447,697.34 and 3,138,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947,377.43 : 5,447,697.34 = 3,138,258.50 : x
2. Step 2: Convert to fraction form
   3,947,377.43/5,447,697.34 = 3,138,258.50/x
3. Step 3: Cross multiply
   3,947,377.43x = 5,447,697.34 × 3,138,258.50
4. Step 4: Simplify right side
   3,947,377.43x = 17,096,282,480,610.34
5. Step 5: Solve for x
   x = 17,096,282,480,610.34/3,947,377.43
6. Step 6: Final answer
   x = 4,331,048.35