Finding the Fourth Proportional to 13,915.69, 19,206.72 and 10,884.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,915.69 : 19,206.72 = 10,884.80 : x
2. Step 2: Convert to fraction form
   13,915.69/19,206.72 = 10,884.80/x
3. Step 3: Cross multiply
   13,915.69x = 19,206.72 × 10,884.80
4. Step 4: Simplify right side
   13,915.69x = 209,061,353.87
5. Step 5: Solve for x
   x = 209,061,353.87/13,915.69
6. Step 6: Final answer
   x = 15,023.43