Finding the Fourth Proportional to 12,387.33, 18,586.46 and 5,006.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,387.33 : 18,586.46 = 5,006.21 : x
2. Step 2: Convert to fraction form
   12,387.33/18,586.46 = 5,006.21/x
3. Step 3: Cross multiply
   12,387.33x = 18,586.46 × 5,006.21
4. Step 4: Simplify right side
   12,387.33x = 93,047,641.50
5. Step 5: Solve for x
   x = 93,047,641.50/12,387.33
6. Step 6: Final answer
   x = 7,511.52