Finding the Fourth Proportional to 13,109.38, 19,669.34 and 4,789.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109.38 : 19,669.34 = 4,789.96 : x
2. Step 2: Convert to fraction form
   13,109.38/19,669.34 = 4,789.96/x
3. Step 3: Cross multiply
   13,109.38x = 19,669.34 × 4,789.96
4. Step 4: Simplify right side
   13,109.38x = 94,215,351.83
5. Step 5: Solve for x
   x = 94,215,351.83/13,109.38
6. Step 6: Final answer
   x = 7,186.87