Finding the Fourth Proportional to 13,522.37, 18,659.72 and 7,855.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,522.37 : 18,659.72 = 7,855.29 : x
2. Step 2: Convert to fraction form
   13,522.37/18,659.72 = 7,855.29/x
3. Step 3: Cross multiply
   13,522.37x = 18,659.72 × 7,855.29
4. Step 4: Simplify right side
   13,522.37x = 146,577,531.56
5. Step 5: Solve for x
   x = 146,577,531.56/13,522.37
6. Step 6: Final answer
   x = 10,839.64