Finding the Fourth Proportional to 11,931.72, 17,861.94 and 7,237.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,931.72 : 17,861.94 = 7,237.50 : x
2. Step 2: Convert to fraction form
   11,931.72/17,861.94 = 7,237.50/x
3. Step 3: Cross multiply
   11,931.72x = 17,861.94 × 7,237.50
4. Step 4: Simplify right side
   11,931.72x = 129,275,790.75
5. Step 5: Solve for x
   x = 129,275,790.75/11,931.72
6. Step 6: Final answer
   x = 10,834.63