Finding the Fourth Proportional to 11,485.79, 15,852.13 and 7,012.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,485.79 : 15,852.13 = 7,012.15 : x
2. Step 2: Convert to fraction form
   11,485.79/15,852.13 = 7,012.15/x
3. Step 3: Cross multiply
   11,485.79x = 15,852.13 × 7,012.15
4. Step 4: Simplify right side
   11,485.79x = 111,157,456.22
5. Step 5: Solve for x
   x = 111,157,456.22/11,485.79
6. Step 6: Final answer
   x = 9,677.82