Finding the Fourth Proportional to 13,324.55, 19,990.13 and 3,964.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,324.55 : 19,990.13 = 3,964.52 : x
2. Step 2: Convert to fraction form
   13,324.55/19,990.13 = 3,964.52/x
3. Step 3: Cross multiply
   13,324.55x = 19,990.13 × 3,964.52
4. Step 4: Simplify right side
   13,324.55x = 79,251,300.34
5. Step 5: Solve for x
   x = 79,251,300.34/13,324.55
6. Step 6: Final answer
   x = 5,947.77