Finding the Fourth Proportional to 16,770, 23,152.32 and 11,190.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,770 : 23,152.32 = 11,190.72 : x
2. Step 2: Convert to fraction form
   16,770/23,152.32 = 11,190.72/x
3. Step 3: Cross multiply
   16,770x = 23,152.32 × 11,190.72
4. Step 4: Simplify right side
   16,770x = 259,091,130.47
5. Step 5: Solve for x
   x = 259,091,130.47/16,770
6. Step 6: Final answer
   x = 15,449.68