Finding the Fourth Proportional to 10,822.50, 16,212.72 and 7,113.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,822.50 : 16,212.72 = 7,113.48 : x
2. Step 2: Convert to fraction form
   10,822.50/16,212.72 = 7,113.48/x
3. Step 3: Cross multiply
   10,822.50x = 16,212.72 × 7,113.48
4. Step 4: Simplify right side
   10,822.50x = 115,328,859.47
5. Step 5: Solve for x
   x = 115,328,859.47/10,822.50
6. Step 6: Final answer
   x = 10,656.40