Finding the Fourth Proportional to 12,899,288.09, 19,351,731.50 and 3,923,606.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,899,288.09 : 19,351,731.50 = 3,923,606.81 : x
2. Step 2: Convert to fraction form
   12,899,288.09/19,351,731.50 = 3,923,606.81/x
3. Step 3: Cross multiply
   12,899,288.09x = 19,351,731.50 × 3,923,606.81
4. Step 4: Simplify right side
   12,899,288.09x = 75,928,585,542,166.34
5. Step 5: Solve for x
   x = 75,928,585,542,166.34/12,899,288.09
6. Step 6: Final answer
   x = 5,886,261.71