Finding the Fourth Proportional to 12,224.00, 16,870.20 and 7,185.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,224.00 : 16,870.20 = 7,185.69 : x
2. Step 2: Convert to fraction form
   12,224.00/16,870.20 = 7,185.69/x
3. Step 3: Cross multiply
   12,224.00x = 16,870.20 × 7,185.69
4. Step 4: Simplify right side
   12,224.00x = 121,224,027.44
5. Step 5: Solve for x
   x = 121,224,027.44/12,224.00
6. Step 6: Final answer
   x = 9,916.89