Finding the Fourth Proportional to 13,100.82, 19,650.75 and 5,705.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.82 : 19,650.75 = 5,705.28 : x
2. Step 2: Convert to fraction form
   13,100.82/19,650.75 = 5,705.28/x
3. Step 3: Cross multiply
   13,100.82x = 19,650.75 × 5,705.28
4. Step 4: Simplify right side
   13,100.82x = 112,113,030.96
5. Step 5: Solve for x
   x = 112,113,030.96/13,100.82
6. Step 6: Final answer
   x = 8,557.71