Finding the Fourth Proportional to 12,085.05, 18,128.44 and 5,058.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,085.05 : 18,128.44 = 5,058.00 : x
2. Step 2: Convert to fraction form
   12,085.05/18,128.44 = 5,058.00/x
3. Step 3: Cross multiply
   12,085.05x = 18,128.44 × 5,058.00
4. Step 4: Simplify right side
   12,085.05x = 91,693,571.52
5. Step 5: Solve for x
   x = 91,693,571.52/12,085.05
6. Step 6: Final answer
   x = 7,587.35