Finding the Fourth Proportional to 13,567.39, 20,347.81 and 3,706.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,567.39 : 20,347.81 = 3,706.72 : x
2. Step 2: Convert to fraction form
   13,567.39/20,347.81 = 3,706.72/x
3. Step 3: Cross multiply
   13,567.39x = 20,347.81 × 3,706.72
4. Step 4: Simplify right side
   13,567.39x = 75,423,574.15
5. Step 5: Solve for x
   x = 75,423,574.15/13,567.39
6. Step 6: Final answer
   x = 5,559.18