Finding the Fourth Proportional to 17,650.86, 26,485.53 and 7,123.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,650.86 : 26,485.53 = 7,123.50 : x
2. Step 2: Convert to fraction form
   17,650.86/26,485.53 = 7,123.50/x
3. Step 3: Cross multiply
   17,650.86x = 26,485.53 × 7,123.50
4. Step 4: Simplify right side
   17,650.86x = 188,669,504.91
5. Step 5: Solve for x
   x = 188,669,504.91/17,650.86
6. Step 6: Final answer
   x = 10,688.97