Finding the Fourth Proportional to 13,669.50, 20,502.42 and 5,343.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,669.50 : 20,502.42 = 5,343.72 : x
2. Step 2: Convert to fraction form
   13,669.50/20,502.42 = 5,343.72/x
3. Step 3: Cross multiply
   13,669.50x = 20,502.42 × 5,343.72
4. Step 4: Simplify right side
   13,669.50x = 109,559,191.80
5. Step 5: Solve for x
   x = 109,559,191.80/13,669.50
6. Step 6: Final answer
   x = 8,014.86