Finding the Fourth Proportional to 21,039.59, 31,559.25 and 5,244.53

Step by Step Solution

1. Step 1: Write the proportion equation
   21,039.59 : 31,559.25 = 5,244.53 : x
2. Step 2: Convert to fraction form
   21,039.59/31,559.25 = 5,244.53/x
3. Step 3: Cross multiply
   21,039.59x = 31,559.25 × 5,244.53
4. Step 4: Simplify right side
   21,039.59x = 165,513,433.40
5. Step 5: Solve for x
   x = 165,513,433.40/21,039.59
6. Step 6: Final answer
   x = 7,866.76