Finding the Fourth Proportional to 12,090.50, 16,684.96 and 7,058.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,090.50 : 16,684.96 = 7,058.22 : x
2. Step 2: Convert to fraction form
   12,090.50/16,684.96 = 7,058.22/x
3. Step 3: Cross multiply
   12,090.50x = 16,684.96 × 7,058.22
4. Step 4: Simplify right side
   12,090.50x = 117,766,118.37
5. Step 5: Solve for x
   x = 117,766,118.37/12,090.50
6. Step 6: Final answer
   x = 9,740.38