Finding the Fourth Proportional to 13,522.08, 18,656.38 and 7,855.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,522.08 : 18,656.38 = 7,855.72 : x
2. Step 2: Convert to fraction form
   13,522.08/18,656.38 = 7,855.72/x
3. Step 3: Cross multiply
   13,522.08x = 18,656.38 × 7,855.72
4. Step 4: Simplify right side
   13,522.08x = 146,559,297.49
5. Step 5: Solve for x
   x = 146,559,297.49/13,522.08
6. Step 6: Final answer
   x = 10,838.52