Finding the Fourth Proportional to 13,833.91, 19,091.33 and 7,866.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,833.91 : 19,091.33 = 7,866.12 : x
2. Step 2: Convert to fraction form
   13,833.91/19,091.33 = 7,866.12/x
3. Step 3: Cross multiply
   13,833.91x = 19,091.33 × 7,866.12
4. Step 4: Simplify right side
   13,833.91x = 150,174,692.74
5. Step 5: Solve for x
   x = 150,174,692.74/13,833.91
6. Step 6: Final answer
   x = 10,855.55