Finding the Fourth Proportional to 11,900.84, 17,817.98 and 8,969.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,900.84 : 17,817.98 = 8,969.96 : x
2. Step 2: Convert to fraction form
   11,900.84/17,817.98 = 8,969.96/x
3. Step 3: Cross multiply
   11,900.84x = 17,817.98 × 8,969.96
4. Step 4: Simplify right side
   11,900.84x = 159,826,567.88
5. Step 5: Solve for x
   x = 159,826,567.88/11,900.84
6. Step 6: Final answer
   x = 13,429.86