Finding the Fourth Proportional to 12,997.98, 17,920.94 and 10,847.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,997.98 : 17,920.94 = 10,847.61 : x
2. Step 2: Convert to fraction form
   12,997.98/17,920.94 = 10,847.61/x
3. Step 3: Cross multiply
   12,997.98x = 17,920.94 × 10,847.61
4. Step 4: Simplify right side
   12,997.98x = 194,399,313.72
5. Step 5: Solve for x
   x = 194,399,313.72/12,997.98
6. Step 6: Final answer
   x = 14,956.12