Finding the Fourth Proportional to 9,987.44, 13,783.50 and 5,511.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,987.44 : 13,783.50 = 5,511.62 : x
2. Step 2: Convert to fraction form
   9,987.44/13,783.50 = 5,511.62/x
3. Step 3: Cross multiply
   9,987.44x = 13,783.50 × 5,511.62
4. Step 4: Simplify right side
   9,987.44x = 75,969,414.27
5. Step 5: Solve for x
   x = 75,969,414.27/9,987.44
6. Step 6: Final answer
   x = 7,606.50