Finding the Fourth Proportional to 12,411.86, 18,621.43 and 5,012.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,411.86 : 18,621.43 = 5,012.51 : x
2. Step 2: Convert to fraction form
   12,411.86/18,621.43 = 5,012.51/x
3. Step 3: Cross multiply
   12,411.86x = 18,621.43 × 5,012.51
4. Step 4: Simplify right side
   12,411.86x = 93,339,998.45
5. Step 5: Solve for x
   x = 93,339,998.45/12,411.86
6. Step 6: Final answer
   x = 7,520.23