Finding the Fourth Proportional to 9,152.51, 12,629.75 and 5,119.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,152.51 : 12,629.75 = 5,119.31 : x
2. Step 2: Convert to fraction form
   9,152.51/12,629.75 = 5,119.31/x
3. Step 3: Cross multiply
   9,152.51x = 12,629.75 × 5,119.31
4. Step 4: Simplify right side
   9,152.51x = 64,655,611.45
5. Step 5: Solve for x
   x = 64,655,611.45/9,152.51
6. Step 6: Final answer
   x = 7,064.25