Finding the Fourth Proportional to 13,047.05, 18,004.88 and 7,746.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,047.05 : 18,004.88 = 7,746.23 : x
2. Step 2: Convert to fraction form
   13,047.05/18,004.88 = 7,746.23/x
3. Step 3: Cross multiply
   13,047.05x = 18,004.88 × 7,746.23
4. Step 4: Simplify right side
   13,047.05x = 139,469,870.94
5. Step 5: Solve for x
   x = 139,469,870.94/13,047.05
6. Step 6: Final answer
   x = 10,689.77