Finding the Fourth Proportional to 13,364.79, 18,429.89 and 8,056.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,364.79 : 18,429.89 = 8,056.45 : x
2. Step 2: Convert to fraction form
   13,364.79/18,429.89 = 8,056.45/x
3. Step 3: Cross multiply
   13,364.79x = 18,429.89 × 8,056.45
4. Step 4: Simplify right side
   13,364.79x = 148,479,487.29
5. Step 5: Solve for x
   x = 148,479,487.29/13,364.79
6. Step 6: Final answer
   x = 11,109.75