Finding the Fourth Proportional to 12,200.98, 16,838.67 and 7,165.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,200.98 : 16,838.67 = 7,165.93 : x
2. Step 2: Convert to fraction form
   12,200.98/16,838.67 = 7,165.93/x
3. Step 3: Cross multiply
   12,200.98x = 16,838.67 × 7,165.93
4. Step 4: Simplify right side
   12,200.98x = 120,664,730.51
5. Step 5: Solve for x
   x = 120,664,730.51/12,200.98
6. Step 6: Final answer
   x = 9,889.76