Finding the Fourth Proportional to 13,921.18, 19,211.61 and 7,953.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,921.18 : 19,211.61 = 7,953.82 : x
2. Step 2: Convert to fraction form
   13,921.18/19,211.61 = 7,953.82/x
3. Step 3: Cross multiply
   13,921.18x = 19,211.61 × 7,953.82
4. Step 4: Simplify right side
   13,921.18x = 152,805,687.85
5. Step 5: Solve for x
   x = 152,805,687.85/13,921.18
6. Step 6: Final answer
   x = 10,976.49