Finding the Fourth Proportional to 12,866.03, 17,751.62 and 7,830.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,866.03 : 17,751.62 = 7,830.46 : x
2. Step 2: Convert to fraction form
   12,866.03/17,751.62 = 7,830.46/x
3. Step 3: Cross multiply
   12,866.03x = 17,751.62 × 7,830.46
4. Step 4: Simplify right side
   12,866.03x = 139,003,350.35
5. Step 5: Solve for x
   x = 139,003,350.35/12,866.03
6. Step 6: Final answer
   x = 10,803.90