Finding the Fourth Proportional to 12,492.91, 18,742.38 and 3,728.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,492.91 : 18,742.38 = 3,728.53 : x
2. Step 2: Convert to fraction form
   12,492.91/18,742.38 = 3,728.53/x
3. Step 3: Cross multiply
   12,492.91x = 18,742.38 × 3,728.53
4. Step 4: Simplify right side
   12,492.91x = 69,881,526.10
5. Step 5: Solve for x
   x = 69,881,526.10/12,492.91
6. Step 6: Final answer
   x = 5,593.69