Finding the Fourth Proportional to 13,801.08, 19,049.79 and 7,836.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,801.08 : 19,049.79 = 7,836.72 : x
2. Step 2: Convert to fraction form
   13,801.08/19,049.79 = 7,836.72/x
3. Step 3: Cross multiply
   13,801.08x = 19,049.79 × 7,836.72
4. Step 4: Simplify right side
   13,801.08x = 149,287,870.29
5. Step 5: Solve for x
   x = 149,287,870.29/13,801.08
6. Step 6: Final answer
   x = 10,817.12