Finding the Fourth Proportional to 13,039.25, 19,561.59 and 4,273.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,039.25 : 19,561.59 = 4,273.47 : x
2. Step 2: Convert to fraction form
   13,039.25/19,561.59 = 4,273.47/x
3. Step 3: Cross multiply
   13,039.25x = 19,561.59 × 4,273.47
4. Step 4: Simplify right side
   13,039.25x = 83,595,868.02
5. Step 5: Solve for x
   x = 83,595,868.02/13,039.25
6. Step 6: Final answer
   x = 6,411.10