Finding the Fourth Proportional to 13,180.73, 19,770.48 and 3,820.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,180.73 : 19,770.48 = 3,820.47 : x
2. Step 2: Convert to fraction form
   13,180.73/19,770.48 = 3,820.47/x
3. Step 3: Cross multiply
   13,180.73x = 19,770.48 × 3,820.47
4. Step 4: Simplify right side
   13,180.73x = 75,532,451.59
5. Step 5: Solve for x
   x = 75,532,451.59/13,180.73
6. Step 6: Final answer
   x = 5,730.52