Finding the Fourth Proportional to 6,131.88, 9,191.25 and 2,428.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,131.88 : 9,191.25 = 2,428.98 : x
2. Step 2: Convert to fraction form
   6,131.88/9,191.25 = 2,428.98/x
3. Step 3: Cross multiply
   6,131.88x = 9,191.25 × 2,428.98
4. Step 4: Simplify right side
   6,131.88x = 22,325,362.43
5. Step 5: Solve for x
   x = 22,325,362.43/6,131.88
6. Step 6: Final answer
   x = 3,640.87