Finding the Fourth Proportional to 9,189.05, 12,680.96 and 5,411.00

Step by Step Solution

1. Step 1: Write the proportion equation
   9,189.05 : 12,680.96 = 5,411.00 : x
2. Step 2: Convert to fraction form
   9,189.05/12,680.96 = 5,411.00/x
3. Step 3: Cross multiply
   9,189.05x = 12,680.96 × 5,411.00
4. Step 4: Simplify right side
   9,189.05x = 68,616,679.21
5. Step 5: Solve for x
   x = 68,616,679.21/9,189.05
6. Step 6: Final answer
   x = 7,467.23