Finding the Fourth Proportional to 12,581.90, 18,875.57 and 3,817.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,581.90 : 18,875.57 = 3,817.47 : x
2. Step 2: Convert to fraction form
   12,581.90/18,875.57 = 3,817.47/x
3. Step 3: Cross multiply
   12,581.90x = 18,875.57 × 3,817.47
4. Step 4: Simplify right side
   12,581.90x = 72,056,903.12
5. Step 5: Solve for x
   x = 72,056,903.12/12,581.90
6. Step 6: Final answer
   x = 5,727.03