Finding the Fourth Proportional to 12,492.90, 18,742.68 and 3,727.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,492.90 : 18,742.68 = 3,727.89 : x
2. Step 2: Convert to fraction form
   12,492.90/18,742.68 = 3,727.89/x
3. Step 3: Cross multiply
   12,492.90x = 18,742.68 × 3,727.89
4. Step 4: Simplify right side
   12,492.90x = 69,870,649.35
5. Step 5: Solve for x
   x = 69,870,649.35/12,492.90
6. Step 6: Final answer
   x = 5,592.83