Finding the Fourth Proportional to 13,809.59, 19,057.61 and 7,522.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,809.59 : 19,057.61 = 7,522.37 : x
2. Step 2: Convert to fraction form
   13,809.59/19,057.61 = 7,522.37/x
3. Step 3: Cross multiply
   13,809.59x = 19,057.61 × 7,522.37
4. Step 4: Simplify right side
   13,809.59x = 143,358,356.12
5. Step 5: Solve for x
   x = 143,358,356.12/13,809.59
6. Step 6: Final answer
   x = 10,381.07