Finding the Fourth Proportional to 12,705.95, 19,059.91 and 3,820.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,705.95 : 19,059.91 = 3,820.59 : x
2. Step 2: Convert to fraction form
   12,705.95/19,059.91 = 3,820.59/x
3. Step 3: Cross multiply
   12,705.95x = 19,059.91 × 3,820.59
4. Step 4: Simplify right side
   12,705.95x = 72,820,101.55
5. Step 5: Solve for x
   x = 72,820,101.55/12,705.95
6. Step 6: Final answer
   x = 5,731.18