Finding the Fourth Proportional to 12,071.66, 18,099.69 and 5,049.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,071.66 : 18,099.69 = 5,049.77 : x
2. Step 2: Convert to fraction form
   12,071.66/18,099.69 = 5,049.77/x
3. Step 3: Cross multiply
   12,071.66x = 18,099.69 × 5,049.77
4. Step 4: Simplify right side
   12,071.66x = 91,399,181.07
5. Step 5: Solve for x
   x = 91,399,181.07/12,071.66
6. Step 6: Final answer
   x = 7,571.39