Finding the Fourth Proportional to 16,061.81, 22,161.74 and 10,091.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,061.81 : 22,161.74 = 10,091.30 : x
2. Step 2: Convert to fraction form
   16,061.81/22,161.74 = 10,091.30/x
3. Step 3: Cross multiply
   16,061.81x = 22,161.74 × 10,091.30
4. Step 4: Simplify right side
   16,061.81x = 223,640,605.60
5. Step 5: Solve for x
   x = 223,640,605.60/16,061.81
6. Step 6: Final answer
   x = 13,923.75