Finding the Fourth Proportional to 8,543.17, 11,790.88 and 5,185.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,543.17 : 11,790.88 = 5,185.34 : x
2. Step 2: Convert to fraction form
   8,543.17/11,790.88 = 5,185.34/x
3. Step 3: Cross multiply
   8,543.17x = 11,790.88 × 5,185.34
4. Step 4: Simplify right side
   8,543.17x = 61,139,636.82
5. Step 5: Solve for x
   x = 61,139,636.82/8,543.17
6. Step 6: Final answer
   x = 7,156.55