Finding the Fourth Proportional to 11,830.35, 17,740.67 and 4,431.00

Step by Step Solution

1. Step 1: Write the proportion equation
   11,830.35 : 17,740.67 = 4,431.00 : x
2. Step 2: Convert to fraction form
   11,830.35/17,740.67 = 4,431.00/x
3. Step 3: Cross multiply
   11,830.35x = 17,740.67 × 4,431.00
4. Step 4: Simplify right side
   11,830.35x = 78,608,978.07
5. Step 5: Solve for x
   x = 78,608,978.07/11,830.35
6. Step 6: Final answer
   x = 6,644.69