Finding the Fourth Proportional to 14,405.56, 19,878.24 and 10,630.78

Step by Step Solution

1. Step 1: Write the proportion equation
   14,405.56 : 19,878.24 = 10,630.78 : x
2. Step 2: Convert to fraction form
   14,405.56/19,878.24 = 10,630.78/x
3. Step 3: Cross multiply
   14,405.56x = 19,878.24 × 10,630.78
4. Step 4: Simplify right side
   14,405.56x = 211,321,196.23
5. Step 5: Solve for x
   x = 211,321,196.23/14,405.56
6. Step 6: Final answer
   x = 14,669.42