Finding the Fourth Proportional to 12,018.10, 16,579.82 and 7,538.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,018.10 : 16,579.82 = 7,538.80 : x
2. Step 2: Convert to fraction form
   12,018.10/16,579.82 = 7,538.80/x
3. Step 3: Cross multiply
   12,018.10x = 16,579.82 × 7,538.80
4. Step 4: Simplify right side
   12,018.10x = 124,991,947.02
5. Step 5: Solve for x
   x = 124,991,947.02/12,018.10
6. Step 6: Final answer
   x = 10,400.31