Finding the Fourth Proportional to 13,053.33, 18,013.73 and 7,085.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,053.33 : 18,013.73 = 7,085.05 : x
2. Step 2: Convert to fraction form
   13,053.33/18,013.73 = 7,085.05/x
3. Step 3: Cross multiply
   13,053.33x = 18,013.73 × 7,085.05
4. Step 4: Simplify right side
   13,053.33x = 127,628,097.28
5. Step 5: Solve for x
   x = 127,628,097.28/13,053.33
6. Step 6: Final answer
   x = 9,777.44