Finding the Fourth Proportional to 21,956.52, 30,288.58 and 13,460.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,956.52 : 30,288.58 = 13,460.63 : x
2. Step 2: Convert to fraction form
   21,956.52/30,288.58 = 13,460.63/x
3. Step 3: Cross multiply
   21,956.52x = 30,288.58 × 13,460.63
4. Step 4: Simplify right side
   21,956.52x = 407,703,429.60
5. Step 5: Solve for x
   x = 407,703,429.60/21,956.52
6. Step 6: Final answer
   x = 18,568.67