Finding the Fourth Proportional to 13,525.18, 18,665.71 and 7,475.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,525.18 : 18,665.71 = 7,475.29 : x
2. Step 2: Convert to fraction form
   13,525.18/18,665.71 = 7,475.29/x
3. Step 3: Cross multiply
   13,525.18x = 18,665.71 × 7,475.29
4. Step 4: Simplify right side
   13,525.18x = 139,531,661.26
5. Step 5: Solve for x
   x = 139,531,661.26/13,525.18
6. Step 6: Final answer
   x = 10,316.44