Finding the Fourth Proportional to 17,665.94, 26,499.72 and 12,494.90

Step by Step Solution

1. Step 1: Write the proportion equation
   17,665.94 : 26,499.72 = 12,494.90 : x
2. Step 2: Convert to fraction form
   17,665.94/26,499.72 = 12,494.90/x
3. Step 3: Cross multiply
   17,665.94x = 26,499.72 × 12,494.90
4. Step 4: Simplify right side
   17,665.94x = 331,111,351.43
5. Step 5: Solve for x
   x = 331,111,351.43/17,665.94
6. Step 6: Final answer
   x = 18,742.92