Finding the Fourth Proportional to 11,222.09, 16,835.55 and 3,430.70

Step by Step Solution

1. Step 1: Write the proportion equation
   11,222.09 : 16,835.55 = 3,430.70 : x
2. Step 2: Convert to fraction form
   11,222.09/16,835.55 = 3,430.70/x
3. Step 3: Cross multiply
   11,222.09x = 16,835.55 × 3,430.70
4. Step 4: Simplify right side
   11,222.09x = 57,757,721.39
5. Step 5: Solve for x
   x = 57,757,721.39/11,222.09
6. Step 6: Final answer
   x = 5,146.79