Finding the Fourth Proportional to 11,761.39, 16,225.59 and 7,222.51

Step by Step Solution

1. Step 1: Write the proportion equation
   11,761.39 : 16,225.59 = 7,222.51 : x
2. Step 2: Convert to fraction form
   11,761.39/16,225.59 = 7,222.51/x
3. Step 3: Cross multiply
   11,761.39x = 16,225.59 × 7,222.51
4. Step 4: Simplify right side
   11,761.39x = 117,189,486.03
5. Step 5: Solve for x
   x = 117,189,486.03/11,761.39
6. Step 6: Final answer
   x = 9,963.91