Finding the Fourth Proportional to 11,643.89, 17,474.29 and 8,730.05

Step by Step Solution

1. Step 1: Write the proportion equation
   11,643.89 : 17,474.29 = 8,730.05 : x
2. Step 2: Convert to fraction form
   11,643.89/17,474.29 = 8,730.05/x
3. Step 3: Cross multiply
   11,643.89x = 17,474.29 × 8,730.05
4. Step 4: Simplify right side
   11,643.89x = 152,551,316.22
5. Step 5: Solve for x
   x = 152,551,316.22/11,643.89
6. Step 6: Final answer
   x = 13,101.41