Finding the Fourth Proportional to 9,936.90, 13,710.42 and 7,951.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,936.90 : 13,710.42 = 7,951.50 : x
2. Step 2: Convert to fraction form
   9,936.90/13,710.42 = 7,951.50/x
3. Step 3: Cross multiply
   9,936.90x = 13,710.42 × 7,951.50
4. Step 4: Simplify right side
   9,936.90x = 109,018,404.63
5. Step 5: Solve for x
   x = 109,018,404.63/9,936.90
6. Step 6: Final answer
   x = 10,971.07