Finding the Fourth Proportional to 12,830.03, 17,705.27 and 7,164.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,830.03 : 17,705.27 = 7,164.87 : x
2. Step 2: Convert to fraction form
   12,830.03/17,705.27 = 7,164.87/x
3. Step 3: Cross multiply
   12,830.03x = 17,705.27 × 7,164.87
4. Step 4: Simplify right side
   12,830.03x = 126,856,020.04
5. Step 5: Solve for x
   x = 126,856,020.04/12,830.03
6. Step 6: Final answer
   x = 9,887.43