Finding the Fourth Proportional to 11,146.35, 16,721.72 and 4,126.43

Step by Step Solution

1. Step 1: Write the proportion equation
   11,146.35 : 16,721.72 = 4,126.43 : x
2. Step 2: Convert to fraction form
   11,146.35/16,721.72 = 4,126.43/x
3. Step 3: Cross multiply
   11,146.35x = 16,721.72 × 4,126.43
4. Step 4: Simplify right side
   11,146.35x = 69,000,902.82
5. Step 5: Solve for x
   x = 69,000,902.82/11,146.35
6. Step 6: Final answer
   x = 6,190.45