Finding the Fourth Proportional to 13,098.72, 19,650.96 and 3,865.44

Step by Step Solution

1. Step 1: Write the proportion equation
   13,098.72 : 19,650.96 = 3,865.44 : x
2. Step 2: Convert to fraction form
   13,098.72/19,650.96 = 3,865.44/x
3. Step 3: Cross multiply
   13,098.72x = 19,650.96 × 3,865.44
4. Step 4: Simplify right side
   13,098.72x = 75,959,606.82
5. Step 5: Solve for x
   x = 75,959,606.82/13,098.72
6. Step 6: Final answer
   x = 5,799.01