Finding the Fourth Proportional to 10,783.88, 16,172.64 and 4,857.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,783.88 : 16,172.64 = 4,857.34 : x
2. Step 2: Convert to fraction form
   10,783.88/16,172.64 = 4,857.34/x
3. Step 3: Cross multiply
   10,783.88x = 16,172.64 × 4,857.34
4. Step 4: Simplify right side
   10,783.88x = 78,556,032.89
5. Step 5: Solve for x
   x = 78,556,032.89/10,783.88
6. Step 6: Final answer
   x = 7,284.58