Finding the Fourth Proportional to 13,823.84, 19,086.72 and 8,520.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,823.84 : 19,086.72 = 8,520.32 : x
2. Step 2: Convert to fraction form
   13,823.84/19,086.72 = 8,520.32/x
3. Step 3: Cross multiply
   13,823.84x = 19,086.72 × 8,520.32
4. Step 4: Simplify right side
   13,823.84x = 162,624,962.15
5. Step 5: Solve for x
   x = 162,624,962.15/13,823.84
6. Step 6: Final answer
   x = 11,764.09