Finding the Fourth Proportional to 9,065.51, 12,510.82 and 5,288.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,065.51 : 12,510.82 = 5,288.07 : x
2. Step 2: Convert to fraction form
   9,065.51/12,510.82 = 5,288.07/x
3. Step 3: Cross multiply
   9,065.51x = 12,510.82 × 5,288.07
4. Step 4: Simplify right side
   9,065.51x = 66,158,091.92
5. Step 5: Solve for x
   x = 66,158,091.92/9,065.51
6. Step 6: Final answer
   x = 7,297.78