Finding the Fourth Proportional to 12,412.61, 18,618.87 and 5,016.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,412.61 : 18,618.87 = 5,016.98 : x
2. Step 2: Convert to fraction form
   12,412.61/18,618.87 = 5,016.98/x
3. Step 3: Cross multiply
   12,412.61x = 18,618.87 × 5,016.98
4. Step 4: Simplify right side
   12,412.61x = 93,410,380.23
5. Step 5: Solve for x
   x = 93,410,380.23/12,412.61
6. Step 6: Final answer
   x = 7,525.45