Finding the Fourth Proportional to 13,809.96, 19,057.72 and 7,522.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,809.96 : 19,057.72 = 7,522.32 : x
2. Step 2: Convert to fraction form
   13,809.96/19,057.72 = 7,522.32/x
3. Step 3: Cross multiply
   13,809.96x = 19,057.72 × 7,522.32
4. Step 4: Simplify right side
   13,809.96x = 143,358,268.31
5. Step 5: Solve for x
   x = 143,358,268.31/13,809.96
6. Step 6: Final answer
   x = 10,380.79