Finding the Fourth Proportional to 12,690.82, 19,035.42 and 3,925

Step by Step Solution

1. Step 1: Write the proportion equation
   12,690.82 : 19,035.42 = 3,925 : x
2. Step 2: Convert to fraction form
   12,690.82/19,035.42 = 3,925/x
3. Step 3: Cross multiply
   12,690.82x = 19,035.42 × 3,925
4. Step 4: Simplify right side
   12,690.82x = 74,714,023.50
5. Step 5: Solve for x
   x = 74,714,023.50/12,690.82
6. Step 6: Final answer
   x = 5,887.25