Finding the Fourth Proportional to 13,209.27, 19,816.94 and 4,443.95

Step by Step Solution

1. Step 1: Write the proportion equation
   13,209.27 : 19,816.94 = 4,443.95 : x
2. Step 2: Convert to fraction form
   13,209.27/19,816.94 = 4,443.95/x
3. Step 3: Cross multiply
   13,209.27x = 19,816.94 × 4,443.95
4. Step 4: Simplify right side
   13,209.27x = 88,065,490.51
5. Step 5: Solve for x
   x = 88,065,490.51/13,209.27
6. Step 6: Final answer
   x = 6,666.95