Finding the Fourth Proportional to 13,300.11, 19,953.08 and 3,940.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,300.11 : 19,953.08 = 3,940.86 : x
2. Step 2: Convert to fraction form
   13,300.11/19,953.08 = 3,940.86/x
3. Step 3: Cross multiply
   13,300.11x = 19,953.08 × 3,940.86
4. Step 4: Simplify right side
   13,300.11x = 78,632,185.23
5. Step 5: Solve for x
   x = 78,632,185.23/13,300.11
6. Step 6: Final answer
   x = 5,912.15