Finding the Fourth Proportional to 9,196.84, 13,776.54 and 8,430.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,196.84 : 13,776.54 = 8,430.54 : x
2. Step 2: Convert to fraction form
   9,196.84/13,776.54 = 8,430.54/x
3. Step 3: Cross multiply
   9,196.84x = 13,776.54 × 8,430.54
4. Step 4: Simplify right side
   9,196.84x = 116,143,608.37
5. Step 5: Solve for x
   x = 116,143,608.37/9,196.84
6. Step 6: Final answer
   x = 12,628.64