Finding the Fourth Proportional to 12,955.48, 17,878.59 and 7,290.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,955.48 : 17,878.59 = 7,290.54 : x
2. Step 2: Convert to fraction form
   12,955.48/17,878.59 = 7,290.54/x
3. Step 3: Cross multiply
   12,955.48x = 17,878.59 × 7,290.54
4. Step 4: Simplify right side
   12,955.48x = 130,344,575.54
5. Step 5: Solve for x
   x = 130,344,575.54/12,955.48
6. Step 6: Final answer
   x = 10,060.96