Finding the Fourth Proportional to 19,131.50, 28,697.31 and 5,804.61

Step by Step Solution

1. Step 1: Write the proportion equation
   19,131.50 : 28,697.31 = 5,804.61 : x
2. Step 2: Convert to fraction form
   19,131.50/28,697.31 = 5,804.61/x
3. Step 3: Cross multiply
   19,131.50x = 28,697.31 × 5,804.61
4. Step 4: Simplify right side
   19,131.50x = 166,576,692.60
5. Step 5: Solve for x
   x = 166,576,692.60/19,131.50
6. Step 6: Final answer
   x = 8,706.94