Finding the Fourth Proportional to 11,699.64, 16,145.53 and 7,222.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,699.64 : 16,145.53 = 7,222.37 : x
2. Step 2: Convert to fraction form
   11,699.64/16,145.53 = 7,222.37/x
3. Step 3: Cross multiply
   11,699.64x = 16,145.53 × 7,222.37
4. Step 4: Simplify right side
   11,699.64x = 116,608,892.72
5. Step 5: Solve for x
   x = 116,608,892.72/11,699.64
6. Step 6: Final answer
   x = 9,966.88