Finding the Fourth Proportional to 9,987.50, 13,782.83 and 5,511.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,987.50 : 13,782.83 = 5,511.41 : x
2. Step 2: Convert to fraction form
   9,987.50/13,782.83 = 5,511.41/x
3. Step 3: Cross multiply
   9,987.50x = 13,782.83 × 5,511.41
4. Step 4: Simplify right side
   9,987.50x = 75,962,833.99
5. Step 5: Solve for x
   x = 75,962,833.99/9,987.50
6. Step 6: Final answer
   x = 7,605.79