Finding the Fourth Proportional to 13,815.48, 19,065.06 and 7,847.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,815.48 : 19,065.06 = 7,847.04 : x
2. Step 2: Convert to fraction form
   13,815.48/19,065.06 = 7,847.04/x
3. Step 3: Cross multiply
   13,815.48x = 19,065.06 × 7,847.04
4. Step 4: Simplify right side
   13,815.48x = 149,604,288.42
5. Step 5: Solve for x
   x = 149,604,288.42/13,815.48
6. Step 6: Final answer
   x = 10,828.74