Finding the Fourth Proportional to 10,181.61, 15,270.57 and 3,518.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,181.61 : 15,270.57 = 3,518.10 : x
2. Step 2: Convert to fraction form
   10,181.61/15,270.57 = 3,518.10/x
3. Step 3: Cross multiply
   10,181.61x = 15,270.57 × 3,518.10
4. Step 4: Simplify right side
   10,181.61x = 53,723,392.32
5. Step 5: Solve for x
   x = 53,723,392.32/10,181.61
6. Step 6: Final answer
   x = 5,276.51