Finding the Fourth Proportional to 12,300.17, 16,972.82 and 6,921.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,300.17 : 16,972.82 = 6,921.56 : x
2. Step 2: Convert to fraction form
   12,300.17/16,972.82 = 6,921.56/x
3. Step 3: Cross multiply
   12,300.17x = 16,972.82 × 6,921.56
4. Step 4: Simplify right side
   12,300.17x = 117,478,392.00
5. Step 5: Solve for x
   x = 117,478,392.00/12,300.17
6. Step 6: Final answer
   x = 9,550.96