Finding the Fourth Proportional to 13,698.72, 18,904.32 and 7,411.08

Step by Step Solution

1. Step 1: Write the proportion equation
   13,698.72 : 18,904.32 = 7,411.08 : x
2. Step 2: Convert to fraction form
   13,698.72/18,904.32 = 7,411.08/x
3. Step 3: Cross multiply
   13,698.72x = 18,904.32 × 7,411.08
4. Step 4: Simplify right side
   13,698.72x = 140,101,427.87
5. Step 5: Solve for x
   x = 140,101,427.87/13,698.72
6. Step 6: Final answer
   x = 10,227.34