Finding the Fourth Proportional to 9,374.58, 12,910.50 and 9,170.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,374.58 : 12,910.50 = 9,170.46 : x
2. Step 2: Convert to fraction form
   9,374.58/12,910.50 = 9,170.46/x
3. Step 3: Cross multiply
   9,374.58x = 12,910.50 × 9,170.46
4. Step 4: Simplify right side
   9,374.58x = 118,395,223.83
5. Step 5: Solve for x
   x = 118,395,223.83/9,374.58
6. Step 6: Final answer
   x = 12,629.39