Finding the Fourth Proportional to 13,834.03, 19,091.88 and 7,866.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,834.03 : 19,091.88 = 7,866.28 : x
2. Step 2: Convert to fraction form
   13,834.03/19,091.88 = 7,866.28/x
3. Step 3: Cross multiply
   13,834.03x = 19,091.88 × 7,866.28
4. Step 4: Simplify right side
   13,834.03x = 150,182,073.81
5. Step 5: Solve for x
   x = 150,182,073.81/13,834.03
6. Step 6: Final answer
   x = 10,855.99