Finding the Fourth Proportional to 12,199.72, 16,835.47 and 6,610.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,199.72 : 16,835.47 = 6,610.72 : x
2. Step 2: Convert to fraction form
   12,199.72/16,835.47 = 6,610.72/x
3. Step 3: Cross multiply
   12,199.72x = 16,835.47 × 6,610.72
4. Step 4: Simplify right side
   12,199.72x = 111,294,536.15
5. Step 5: Solve for x
   x = 111,294,536.15/12,199.72
6. Step 6: Final answer
   x = 9,122.71