Finding the Fourth Proportional to 13,931.37, 19,225.89 and 7,963.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,931.37 : 19,225.89 = 7,963.50 : x
2. Step 2: Convert to fraction form
   13,931.37/19,225.89 = 7,963.50/x
3. Step 3: Cross multiply
   13,931.37x = 19,225.89 × 7,963.50
4. Step 4: Simplify right side
   13,931.37x = 153,105,375.02
5. Step 5: Solve for x
   x = 153,105,375.02/13,931.37
6. Step 6: Final answer
   x = 10,989.97