Finding the Fourth Proportional to 13,050.72, 18,010.04 and 7,745.44

Step by Step Solution

1. Step 1: Write the proportion equation
   13,050.72 : 18,010.04 = 7,745.44 : x
2. Step 2: Convert to fraction form
   13,050.72/18,010.04 = 7,745.44/x
3. Step 3: Cross multiply
   13,050.72x = 18,010.04 × 7,745.44
4. Step 4: Simplify right side
   13,050.72x = 139,495,684.22
5. Step 5: Solve for x
   x = 139,495,684.22/13,050.72
6. Step 6: Final answer
   x = 10,688.73