Finding the Fourth Proportional to 12,305.83, 18,447.39 and 4,908.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,305.83 : 18,447.39 = 4,908.50 : x
2. Step 2: Convert to fraction form
   12,305.83/18,447.39 = 4,908.50/x
3. Step 3: Cross multiply
   12,305.83x = 18,447.39 × 4,908.50
4. Step 4: Simplify right side
   12,305.83x = 90,549,013.82
5. Step 5: Solve for x
   x = 90,549,013.82/12,305.83
6. Step 6: Final answer
   x = 7,358.22