Finding the Fourth Proportional to 13,073.89, 19,610.66 and 3,213.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,073.89 : 19,610.66 = 3,213.25 : x
2. Step 2: Convert to fraction form
   13,073.89/19,610.66 = 3,213.25/x
3. Step 3: Cross multiply
   13,073.89x = 19,610.66 × 3,213.25
4. Step 4: Simplify right side
   13,073.89x = 63,013,953.25
5. Step 5: Solve for x
   x = 63,013,953.25/13,073.89
6. Step 6: Final answer
   x = 4,819.83