Finding the Fourth Proportional to 6,139.98, 9,210.89 and 2,190.93

Step by Step Solution

1. Step 1: Write the proportion equation
   6,139.98 : 9,210.89 = 2,190.93 : x
2. Step 2: Convert to fraction form
   6,139.98/9,210.89 = 2,190.93/x
3. Step 3: Cross multiply
   6,139.98x = 9,210.89 × 2,190.93
4. Step 4: Simplify right side
   6,139.98x = 20,180,404.27
5. Step 5: Solve for x
   x = 20,180,404.27/6,139.98
6. Step 6: Final answer
   x = 3,286.72