Finding the Fourth Proportional to 13,776.72, 19,016.16 and 8,111.01

Step by Step Solution

1. Step 1: Write the proportion equation
   13,776.72 : 19,016.16 = 8,111.01 : x
2. Step 2: Convert to fraction form
   13,776.72/19,016.16 = 8,111.01/x
3. Step 3: Cross multiply
   13,776.72x = 19,016.16 × 8,111.01
4. Step 4: Simplify right side
   13,776.72x = 154,240,263.92
5. Step 5: Solve for x
   x = 154,240,263.92/13,776.72
6. Step 6: Final answer
   x = 11,195.72