Finding the Fourth Proportional to 12,705.60, 19,057.37 and 5,686.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,705.60 : 19,057.37 = 5,686.01 : x
2. Step 2: Convert to fraction form
   12,705.60/19,057.37 = 5,686.01/x
3. Step 3: Cross multiply
   12,705.60x = 19,057.37 × 5,686.01
4. Step 4: Simplify right side
   12,705.60x = 108,360,396.39
5. Step 5: Solve for x
   x = 108,360,396.39/12,705.60
6. Step 6: Final answer
   x = 8,528.55