Finding the Fourth Proportional to 16,804.04, 23,190.72 and 11,129

Step by Step Solution

1. Step 1: Write the proportion equation
   16,804.04 : 23,190.72 = 11,129 : x
2. Step 2: Convert to fraction form
   16,804.04/23,190.72 = 11,129/x
3. Step 3: Cross multiply
   16,804.04x = 23,190.72 × 11,129
4. Step 4: Simplify right side
   16,804.04x = 258,089,522.88
5. Step 5: Solve for x
   x = 258,089,522.88/16,804.04
6. Step 6: Final answer
   x = 15,358.78