Finding the Fourth Proportional to 12,811.59, 19,210.41 and 5,783.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,811.59 : 19,210.41 = 5,783.37 : x
2. Step 2: Convert to fraction form
   12,811.59/19,210.41 = 5,783.37/x
3. Step 3: Cross multiply
   12,811.59x = 19,210.41 × 5,783.37
4. Step 4: Simplify right side
   12,811.59x = 111,100,908.88
5. Step 5: Solve for x
   x = 111,100,908.88/12,811.59
6. Step 6: Final answer
   x = 8,671.91