Finding the Fourth Proportional to 13,054.01, 18,014.31 and 7,085.66

Step by Step Solution

1. Step 1: Write the proportion equation
   13,054.01 : 18,014.31 = 7,085.66 : x
2. Step 2: Convert to fraction form
   13,054.01/18,014.31 = 7,085.66/x
3. Step 3: Cross multiply
   13,054.01x = 18,014.31 × 7,085.66
4. Step 4: Simplify right side
   13,054.01x = 127,643,185.72
5. Step 5: Solve for x
   x = 127,643,185.72/13,054.01
6. Step 6: Final answer
   x = 9,778.09