Finding the Fourth Proportional to 13,300.20, 19,953.22 and 3,940.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,300.20 : 19,953.22 = 3,940.96 : x
2. Step 2: Convert to fraction form
   13,300.20/19,953.22 = 3,940.96/x
3. Step 3: Cross multiply
   13,300.20x = 19,953.22 × 3,940.96
4. Step 4: Simplify right side
   13,300.20x = 78,634,841.89
5. Step 5: Solve for x
   x = 78,634,841.89/13,300.20
6. Step 6: Final answer
   x = 5,912.31