Finding the Fourth Proportional to 13,389.16, 20,086.68 and 5,069.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,389.16 : 20,086.68 = 5,069.25 : x
2. Step 2: Convert to fraction form
   13,389.16/20,086.68 = 5,069.25/x
3. Step 3: Cross multiply
   13,389.16x = 20,086.68 × 5,069.25
4. Step 4: Simplify right side
   13,389.16x = 101,824,402.59
5. Step 5: Solve for x
   x = 101,824,402.59/13,389.16
6. Step 6: Final answer
   x = 7,604.99