Finding the Fourth Proportional to 11,485.10, 15,851.58 and 7,012.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,485.10 : 15,851.58 = 7,012.82 : x
2. Step 2: Convert to fraction form
   11,485.10/15,851.58 = 7,012.82/x
3. Step 3: Cross multiply
   11,485.10x = 15,851.58 × 7,012.82
4. Step 4: Simplify right side
   11,485.10x = 111,164,277.26
5. Step 5: Solve for x
   x = 111,164,277.26/11,485.10
6. Step 6: Final answer
   x = 9,679.00