Finding the Fourth Proportional to 18,300.09, 25,254.15 and 9,916.59

Step by Step Solution

1. Step 1: Write the proportion equation
   18,300.09 : 25,254.15 = 9,916.59 : x
2. Step 2: Convert to fraction form
   18,300.09/25,254.15 = 9,916.59/x
3. Step 3: Cross multiply
   18,300.09x = 25,254.15 × 9,916.59
4. Step 4: Simplify right side
   18,300.09x = 250,435,108.86
5. Step 5: Solve for x
   x = 250,435,108.86/18,300.09
6. Step 6: Final answer
   x = 13,684.91