Finding the Fourth Proportional to 11,486.53, 17,196.34 and 8,538.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,486.53 : 17,196.34 = 8,538.04 : x
2. Step 2: Convert to fraction form
   11,486.53/17,196.34 = 8,538.04/x
3. Step 3: Cross multiply
   11,486.53x = 17,196.34 × 8,538.04
4. Step 4: Simplify right side
   11,486.53x = 146,823,038.77
5. Step 5: Solve for x
   x = 146,823,038.77/11,486.53
6. Step 6: Final answer
   x = 12,782.19