Finding the Fourth Proportional to 16,783.78, 25,171.76 and 7,418.71

Step by Step Solution

1. Step 1: Write the proportion equation
   16,783.78 : 25,171.76 = 7,418.71 : x
2. Step 2: Convert to fraction form
   16,783.78/25,171.76 = 7,418.71/x
3. Step 3: Cross multiply
   16,783.78x = 25,171.76 × 7,418.71
4. Step 4: Simplify right side
   16,783.78x = 186,742,108.44
5. Step 5: Solve for x
   x = 186,742,108.44/16,783.78
6. Step 6: Final answer
   x = 11,126.34