Finding the Fourth Proportional to 6,144,981.28, 8,477,078.16 and 3,971,399.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,144,981.28 : 8,477,078.16 = 3,971,399.20 : x
2. Step 2: Convert to fraction form
   6,144,981.28/8,477,078.16 = 3,971,399.20/x
3. Step 3: Cross multiply
   6,144,981.28x = 8,477,078.16 × 3,971,399.20
4. Step 4: Simplify right side
   6,144,981.28x = 33,665,861,422,961.47
5. Step 5: Solve for x
   x = 33,665,861,422,961.47/6,144,981.28
6. Step 6: Final answer
   x = 5,478,594.63