Finding the Fourth Proportional to 13,809.86, 19,057.73 and 7,522.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,809.86 : 19,057.73 = 7,522.23 : x
2. Step 2: Convert to fraction form
   13,809.86/19,057.73 = 7,522.23/x
3. Step 3: Cross multiply
   13,809.86x = 19,057.73 × 7,522.23
4. Step 4: Simplify right side
   13,809.86x = 143,356,590.73
5. Step 5: Solve for x
   x = 143,356,590.73/13,809.86
6. Step 6: Final answer
   x = 10,380.75