Finding the Fourth Proportional to 9,776.16, 14,663.52 and 3,112.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,776.16 : 14,663.52 = 3,112.40 : x
2. Step 2: Convert to fraction form
   9,776.16/14,663.52 = 3,112.40/x
3. Step 3: Cross multiply
   9,776.16x = 14,663.52 × 3,112.40
4. Step 4: Simplify right side
   9,776.16x = 45,638,776.31
5. Step 5: Solve for x
   x = 45,638,776.31/9,776.16
6. Step 6: Final answer
   x = 4,668.37