Finding the Fourth Proportional to 12,097.72, 16,695.69 and 6,720.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,097.72 : 16,695.69 = 6,720.81 : x
2. Step 2: Convert to fraction form
   12,097.72/16,695.69 = 6,720.81/x
3. Step 3: Cross multiply
   12,097.72x = 16,695.69 × 6,720.81
4. Step 4: Simplify right side
   12,097.72x = 112,208,472.50
5. Step 5: Solve for x
   x = 112,208,472.50/12,097.72
6. Step 6: Final answer
   x = 9,275.17