Finding the Fourth Proportional to 12,185.86, 16,817.61 and 7,404.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,185.86 : 16,817.61 = 7,404.69 : x
2. Step 2: Convert to fraction form
   12,185.86/16,817.61 = 7,404.69/x
3. Step 3: Cross multiply
   12,185.86x = 16,817.61 × 7,404.69
4. Step 4: Simplify right side
   12,185.86x = 124,529,151.57
5. Step 5: Solve for x
   x = 124,529,151.57/12,185.86
6. Step 6: Final answer
   x = 10,219.15