Finding the Fourth Proportional to 13,518.72, 18,651.84 and 7,925.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,518.72 : 18,651.84 = 7,925.76 : x
2. Step 2: Convert to fraction form
   13,518.72/18,651.84 = 7,925.76/x
3. Step 3: Cross multiply
   13,518.72x = 18,651.84 × 7,925.76
4. Step 4: Simplify right side
   13,518.72x = 147,830,007.40
5. Step 5: Solve for x
   x = 147,830,007.40/13,518.72
6. Step 6: Final answer
   x = 10,935.21