Finding the Fourth Proportional to 12,404.21, 17,118.11 and 7,100.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.21 : 17,118.11 = 7,100.73 : x
2. Step 2: Convert to fraction form
   12,404.21/17,118.11 = 7,100.73/x
3. Step 3: Cross multiply
   12,404.21x = 17,118.11 × 7,100.73
4. Step 4: Simplify right side
   12,404.21x = 121,551,077.22
5. Step 5: Solve for x
   x = 121,551,077.22/12,404.21
6. Step 6: Final answer
   x = 9,799.18