Finding the Fourth Proportional to 13,096.86, 18,076.46 and 8,621.00

Step by Step Solution

1. Step 1: Write the proportion equation
   13,096.86 : 18,076.46 = 8,621.00 : x
2. Step 2: Convert to fraction form
   13,096.86/18,076.46 = 8,621.00/x
3. Step 3: Cross multiply
   13,096.86x = 18,076.46 × 8,621.00
4. Step 4: Simplify right side
   13,096.86x = 155,837,028.17
5. Step 5: Solve for x
   x = 155,837,028.17/13,096.86
6. Step 6: Final answer
   x = 11,898.81