Finding the Fourth Proportional to 11,072.35, 15,276.56 and 7,086.54

Step by Step Solution

1. Step 1: Write the proportion equation
   11,072.35 : 15,276.56 = 7,086.54 : x
2. Step 2: Convert to fraction form
   11,072.35/15,276.56 = 7,086.54/x
3. Step 3: Cross multiply
   11,072.35x = 15,276.56 × 7,086.54
4. Step 4: Simplify right side
   11,072.35x = 108,257,953.50
5. Step 5: Solve for x
   x = 108,257,953.50/11,072.35
6. Step 6: Final answer
   x = 9,777.32