Finding the Fourth Proportional to 17,128.99, 25,692.94 and 7,762.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,128.99 : 25,692.94 = 7,762.15 : x
2. Step 2: Convert to fraction form
   17,128.99/25,692.94 = 7,762.15/x
3. Step 3: Cross multiply
   17,128.99x = 25,692.94 × 7,762.15
4. Step 4: Simplify right side
   17,128.99x = 199,432,454.22
5. Step 5: Solve for x
   x = 199,432,454.22/17,128.99
6. Step 6: Final answer
   x = 11,642.98