Finding the Fourth Proportional to 13,923.51, 19,215.46 and 7,955.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,923.51 : 19,215.46 = 7,955.05 : x
2. Step 2: Convert to fraction form
   13,923.51/19,215.46 = 7,955.05/x
3. Step 3: Cross multiply
   13,923.51x = 19,215.46 × 7,955.05
4. Step 4: Simplify right side
   13,923.51x = 152,859,855.40
5. Step 5: Solve for x
   x = 152,859,855.40/13,923.51
6. Step 6: Final answer
   x = 10,978.55