Finding the Fourth Proportional to 12,955.17, 17,878.10 and 7,289.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,955.17 : 17,878.10 = 7,289.93 : x
2. Step 2: Convert to fraction form
   12,955.17/17,878.10 = 7,289.93/x
3. Step 3: Cross multiply
   12,955.17x = 17,878.10 × 7,289.93
4. Step 4: Simplify right side
   12,955.17x = 130,330,105.78
5. Step 5: Solve for x
   x = 130,330,105.78/12,955.17
6. Step 6: Final answer
   x = 10,060.08