Finding the Fourth Proportional to 10,813.96, 14,918.88 and 7,631.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,813.96 : 14,918.88 = 7,631.88 : x
2. Step 2: Convert to fraction form
   10,813.96/14,918.88 = 7,631.88/x
3. Step 3: Cross multiply
   10,813.96x = 14,918.88 × 7,631.88
4. Step 4: Simplify right side
   10,813.96x = 113,859,101.89
5. Step 5: Solve for x
   x = 113,859,101.89/10,813.96
6. Step 6: Final answer
   x = 10,528.90