Finding the Fourth Proportional to 13,518.72, 18,657.60 and 7,930.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,518.72 : 18,657.60 = 7,930.24 : x
2. Step 2: Convert to fraction form
   13,518.72/18,657.60 = 7,930.24/x
3. Step 3: Cross multiply
   13,518.72x = 18,657.60 × 7,930.24
4. Step 4: Simplify right side
   13,518.72x = 147,959,245.82
5. Step 5: Solve for x
   x = 147,959,245.82/13,518.72
6. Step 6: Final answer
   x = 10,944.77