Finding the Fourth Proportional to 3,923,710.40, 5,877,789.60 and 3,456,113.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,923,710.40 : 5,877,789.60 = 3,456,113.60 : x
2. Step 2: Convert to fraction form
   3,923,710.40/5,877,789.60 = 3,456,113.60/x
3. Step 3: Cross multiply
   3,923,710.40x = 5,877,789.60 × 3,456,113.60
4. Step 4: Simplify right side
   3,923,710.40x = 20,314,308,574,498.56
5. Step 5: Solve for x
   x = 20,314,308,574,498.56/3,923,710.40
6. Step 6: Final answer
   x = 5,177,321.08