Finding the Fourth Proportional to 13,698.87, 18,904.43 and 7,411.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,698.87 : 18,904.43 = 7,411.25 : x
2. Step 2: Convert to fraction form
   13,698.87/18,904.43 = 7,411.25/x
3. Step 3: Cross multiply
   13,698.87x = 18,904.43 × 7,411.25
4. Step 4: Simplify right side
   13,698.87x = 140,105,325.26
5. Step 5: Solve for x
   x = 140,105,325.26/13,698.87
6. Step 6: Final answer
   x = 10,227.51