Finding the Fourth Proportional to 13,173.01, 19,759.55 and 5,381.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,173.01 : 19,759.55 = 5,381.82 : x
2. Step 2: Convert to fraction form
   13,173.01/19,759.55 = 5,381.82/x
3. Step 3: Cross multiply
   13,173.01x = 19,759.55 × 5,381.82
4. Step 4: Simplify right side
   13,173.01x = 106,342,314.47
5. Step 5: Solve for x
   x = 106,342,314.47/13,173.01
6. Step 6: Final answer
   x = 8,072.74