Finding the Fourth Proportional to 11,123.43, 16,685.70 and 3,331.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,123.43 : 16,685.70 = 3,331.50 : x
2. Step 2: Convert to fraction form
   11,123.43/16,685.70 = 3,331.50/x
3. Step 3: Cross multiply
   11,123.43x = 16,685.70 × 3,331.50
4. Step 4: Simplify right side
   11,123.43x = 55,588,409.55
5. Step 5: Solve for x
   x = 55,588,409.55/11,123.43
6. Step 6: Final answer
   x = 4,997.42