Finding the Fourth Proportional to 10,518.67, 15,782.62 and 5,587.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,518.67 : 15,782.62 = 5,587.10 : x
2. Step 2: Convert to fraction form
   10,518.67/15,782.62 = 5,587.10/x
3. Step 3: Cross multiply
   10,518.67x = 15,782.62 × 5,587.10
4. Step 4: Simplify right side
   10,518.67x = 88,179,113.08
5. Step 5: Solve for x
   x = 88,179,113.08/10,518.67
6. Step 6: Final answer
   x = 8,383.10