Finding the Fourth Proportional to 12,274.93, 16,926.69 and 8,688.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,274.93 : 16,926.69 = 8,688.25 : x
2. Step 2: Convert to fraction form
   12,274.93/16,926.69 = 8,688.25/x
3. Step 3: Cross multiply
   12,274.93x = 16,926.69 × 8,688.25
4. Step 4: Simplify right side
   12,274.93x = 147,063,314.39
5. Step 5: Solve for x
   x = 147,063,314.39/12,274.93
6. Step 6: Final answer
   x = 11,980.79