Finding the Fourth Proportional to 12,111.83, 18,159.94 and 5,783.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.83 : 18,159.94 = 5,783.29 : x
2. Step 2: Convert to fraction form
   12,111.83/18,159.94 = 5,783.29/x
3. Step 3: Cross multiply
   12,111.83x = 18,159.94 × 5,783.29
4. Step 4: Simplify right side
   12,111.83x = 105,024,139.54
5. Step 5: Solve for x
   x = 105,024,139.54/12,111.83
6. Step 6: Final answer
   x = 8,671.20