Finding the Fourth Proportional to 7,036.51, 10,557.70 and 3,085.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,036.51 : 10,557.70 = 3,085.72 : x
2. Step 2: Convert to fraction form
   7,036.51/10,557.70 = 3,085.72/x
3. Step 3: Cross multiply
   7,036.51x = 10,557.70 × 3,085.72
4. Step 4: Simplify right side
   7,036.51x = 32,578,123.33
5. Step 5: Solve for x
   x = 32,578,123.33/7,036.51
6. Step 6: Final answer
   x = 4,629.87