Finding the Fourth Proportional to 13,039.26, 19,562.52 and 4,280.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,039.26 : 19,562.52 = 4,280.34 : x
2. Step 2: Convert to fraction form
   13,039.26/19,562.52 = 4,280.34/x
3. Step 3: Cross multiply
   13,039.26x = 19,562.52 × 4,280.34
4. Step 4: Simplify right side
   13,039.26x = 83,734,236.86
5. Step 5: Solve for x
   x = 83,734,236.86/13,039.26
6. Step 6: Final answer
   x = 6,421.70