Finding the Fourth Proportional to 11,397.33, 17,051.04 and 8,631.99

Step by Step Solution

1. Step 1: Write the proportion equation
   11,397.33 : 17,051.04 = 8,631.99 : x
2. Step 2: Convert to fraction form
   11,397.33/17,051.04 = 8,631.99/x
3. Step 3: Cross multiply
   11,397.33x = 17,051.04 × 8,631.99
4. Step 4: Simplify right side
   11,397.33x = 147,184,406.77
5. Step 5: Solve for x
   x = 147,184,406.77/11,397.33
6. Step 6: Final answer
   x = 12,913.94