Finding the Fourth Proportional to 12,100.86, 16,685.19 and 9,577.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,100.86 : 16,685.19 = 9,577.98 : x
2. Step 2: Convert to fraction form
   12,100.86/16,685.19 = 9,577.98/x
3. Step 3: Cross multiply
   12,100.86x = 16,685.19 × 9,577.98
4. Step 4: Simplify right side
   12,100.86x = 159,810,416.12
5. Step 5: Solve for x
   x = 159,810,416.12/12,100.86
6. Step 6: Final answer
   x = 13,206.53