Finding the Fourth Proportional to 13,856.72, 19,121.36 and 7,569.08

Step by Step Solution

1. Step 1: Write the proportion equation
   13,856.72 : 19,121.36 = 7,569.08 : x
2. Step 2: Convert to fraction form
   13,856.72/19,121.36 = 7,569.08/x
3. Step 3: Cross multiply
   13,856.72x = 19,121.36 × 7,569.08
4. Step 4: Simplify right side
   13,856.72x = 144,731,103.55
5. Step 5: Solve for x
   x = 144,731,103.55/13,856.72
6. Step 6: Final answer
   x = 10,444.83