Finding the Fourth Proportional to 12,131.94, 18,199.98 and 5,558.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,131.94 : 18,199.98 = 5,558.69 : x
2. Step 2: Convert to fraction form
   12,131.94/18,199.98 = 5,558.69/x
3. Step 3: Cross multiply
   12,131.94x = 18,199.98 × 5,558.69
4. Step 4: Simplify right side
   12,131.94x = 101,167,955.83
5. Step 5: Solve for x
   x = 101,167,955.83/12,131.94
6. Step 6: Final answer
   x = 8,338.98