Finding the Fourth Proportional to 22,716.96, 34,065.71 and 7,921.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,716.96 : 34,065.71 = 7,921.50 : x
2. Step 2: Convert to fraction form
   22,716.96/34,065.71 = 7,921.50/x
3. Step 3: Cross multiply
   22,716.96x = 34,065.71 × 7,921.50
4. Step 4: Simplify right side
   22,716.96x = 269,851,521.77
5. Step 5: Solve for x
   x = 269,851,521.77/22,716.96
6. Step 6: Final answer
   x = 11,878.86