Finding the Fourth Proportional to 13,703.42, 18,910.72 and 7,415.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,703.42 : 18,910.72 = 7,415.80 : x
2. Step 2: Convert to fraction form
   13,703.42/18,910.72 = 7,415.80/x
3. Step 3: Cross multiply
   13,703.42x = 18,910.72 × 7,415.80
4. Step 4: Simplify right side
   13,703.42x = 140,238,022.82
5. Step 5: Solve for x
   x = 140,238,022.82/13,703.42
6. Step 6: Final answer
   x = 10,233.80