Finding the Fourth Proportional to 13,475.94, 18,597.81 and 7,812.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,475.94 : 18,597.81 = 7,812.18 : x
2. Step 2: Convert to fraction form
   13,475.94/18,597.81 = 7,812.18/x
3. Step 3: Cross multiply
   13,475.94x = 18,597.81 × 7,812.18
4. Step 4: Simplify right side
   13,475.94x = 145,289,439.33
5. Step 5: Solve for x
   x = 145,289,439.33/13,475.94
6. Step 6: Final answer
   x = 10,781.40