Finding the Fourth Proportional to 12,499.30, 18,736.62 and 5,099.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.30 : 18,736.62 = 5,099.14 : x
2. Step 2: Convert to fraction form
   12,499.30/18,736.62 = 5,099.14/x
3. Step 3: Cross multiply
   12,499.30x = 18,736.62 × 5,099.14
4. Step 4: Simplify right side
   12,499.30x = 95,540,648.51
5. Step 5: Solve for x
   x = 95,540,648.51/12,499.30
6. Step 6: Final answer
   x = 7,643.68