Finding the Fourth Proportional to 14,300.74, 21,330.55 and 13,863.34

Step by Step Solution

1. Step 1: Write the proportion equation
   14,300.74 : 21,330.55 = 13,863.34 : x
2. Step 2: Convert to fraction form
   14,300.74/21,330.55 = 13,863.34/x
3. Step 3: Cross multiply
   14,300.74x = 21,330.55 × 13,863.34
4. Step 4: Simplify right side
   14,300.74x = 295,712,667.04
5. Step 5: Solve for x
   x = 295,712,667.04/14,300.74
6. Step 6: Final answer
   x = 20,678.14