Finding the Fourth Proportional to 34,863.96, 52,279.61 and 12,661.86

Step by Step Solution

1. Step 1: Write the proportion equation
   34,863.96 : 52,279.61 = 12,661.86 : x
2. Step 2: Convert to fraction form
   34,863.96/52,279.61 = 12,661.86/x
3. Step 3: Cross multiply
   34,863.96x = 52,279.61 × 12,661.86
4. Step 4: Simplify right side
   34,863.96x = 661,957,039.37
5. Step 5: Solve for x
   x = 661,957,039.37/34,863.96
6. Step 6: Final answer
   x = 18,986.86