Finding the Fourth Proportional to 12,585.25, 18,881.99 and 3,820.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,585.25 : 18,881.99 = 3,820.17 : x
2. Step 2: Convert to fraction form
   12,585.25/18,881.99 = 3,820.17/x
3. Step 3: Cross multiply
   12,585.25x = 18,881.99 × 3,820.17
4. Step 4: Simplify right side
   12,585.25x = 72,132,411.74
5. Step 5: Solve for x
   x = 72,132,411.74/12,585.25
6. Step 6: Final answer
   x = 5,731.50