Finding the Fourth Proportional to 12,012.10, 18,021.99 and 5,436.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,012.10 : 18,021.99 = 5,436.52 : x
2. Step 2: Convert to fraction form
   12,012.10/18,021.99 = 5,436.52/x
3. Step 3: Cross multiply
   12,012.10x = 18,021.99 × 5,436.52
4. Step 4: Simplify right side
   12,012.10x = 97,976,884.41
5. Step 5: Solve for x
   x = 97,976,884.41/12,012.10
6. Step 6: Final answer
   x = 8,156.52