Finding the Fourth Proportional to 13,759.25, 18,987.59 and 7,471.67

Step by Step Solution

1. Step 1: Write the proportion equation
   13,759.25 : 18,987.59 = 7,471.67 : x
2. Step 2: Convert to fraction form
   13,759.25/18,987.59 = 7,471.67/x
3. Step 3: Cross multiply
   13,759.25x = 18,987.59 × 7,471.67
4. Step 4: Simplify right side
   13,759.25x = 141,869,006.58
5. Step 5: Solve for x
   x = 141,869,006.58/13,759.25
6. Step 6: Final answer
   x = 10,310.81