Finding the Fourth Proportional to 13,042.72, 18,000.83 and 7,736.51

Step by Step Solution

1. Step 1: Write the proportion equation
   13,042.72 : 18,000.83 = 7,736.51 : x
2. Step 2: Convert to fraction form
   13,042.72/18,000.83 = 7,736.51/x
3. Step 3: Cross multiply
   13,042.72x = 18,000.83 × 7,736.51
4. Step 4: Simplify right side
   13,042.72x = 139,263,665.65
5. Step 5: Solve for x
   x = 139,263,665.65/13,042.72
6. Step 6: Final answer
   x = 10,677.50