Finding the Fourth Proportional to 12,256.06, 16,910.41 and 7,219.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,256.06 : 16,910.41 = 7,219.89 : x
2. Step 2: Convert to fraction form
   12,256.06/16,910.41 = 7,219.89/x
3. Step 3: Cross multiply
   12,256.06x = 16,910.41 × 7,219.89
4. Step 4: Simplify right side
   12,256.06x = 122,091,300.05
5. Step 5: Solve for x
   x = 122,091,300.05/12,256.06
6. Step 6: Final answer
   x = 9,961.71