Finding the Fourth Proportional to 13,824.68, 19,080.78 and 9,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,824.68 : 19,080.78 = 9,630.50 : x
2. Step 2: Convert to fraction form
   13,824.68/19,080.78 = 9,630.50/x
3. Step 3: Cross multiply
   13,824.68x = 19,080.78 × 9,630.50
4. Step 4: Simplify right side
   13,824.68x = 183,757,451.79
5. Step 5: Solve for x
   x = 183,757,451.79/13,824.68
6. Step 6: Final answer
   x = 13,291.99