Finding the Fourth Proportional to 18,411.30, 27,620.55 and 7,316.10

Step by Step Solution

1. Step 1: Write the proportion equation
   18,411.30 : 27,620.55 = 7,316.10 : x
2. Step 2: Convert to fraction form
   18,411.30/27,620.55 = 7,316.10/x
3. Step 3: Cross multiply
   18,411.30x = 27,620.55 × 7,316.10
4. Step 4: Simplify right side
   18,411.30x = 202,074,705.86
5. Step 5: Solve for x
   x = 202,074,705.86/18,411.30
6. Step 6: Final answer
   x = 10,975.58