Finding the Fourth Proportional to 13,110.37, 19,662.98 and 5,105.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,110.37 : 19,662.98 = 5,105.16 : x
2. Step 2: Convert to fraction form
   13,110.37/19,662.98 = 5,105.16/x
3. Step 3: Cross multiply
   13,110.37x = 19,662.98 × 5,105.16
4. Step 4: Simplify right side
   13,110.37x = 100,382,633.45
5. Step 5: Solve for x
   x = 100,382,633.45/13,110.37
6. Step 6: Final answer
   x = 7,656.74