Finding the Fourth Proportional to 11,131.71, 16,701.89 and 4,206.75

Step by Step Solution

1. Step 1: Write the proportion equation
   11,131.71 : 16,701.89 = 4,206.75 : x
2. Step 2: Convert to fraction form
   11,131.71/16,701.89 = 4,206.75/x
3. Step 3: Cross multiply
   11,131.71x = 16,701.89 × 4,206.75
4. Step 4: Simplify right side
   11,131.71x = 70,260,654.72
5. Step 5: Solve for x
   x = 70,260,654.72/11,131.71
6. Step 6: Final answer
   x = 6,311.76