Finding the Fourth Proportional to 10,948.72, 16,427.12 and 7,853.44

Step by Step Solution

1. Step 1: Write the proportion equation
   10,948.72 : 16,427.12 = 7,853.44 : x
2. Step 2: Convert to fraction form
   10,948.72/16,427.12 = 7,853.44/x
3. Step 3: Cross multiply
   10,948.72x = 16,427.12 × 7,853.44
4. Step 4: Simplify right side
   10,948.72x = 129,009,401.29
5. Step 5: Solve for x
   x = 129,009,401.29/10,948.72
6. Step 6: Final answer
   x = 11,783.06