Finding the Fourth Proportional to 17,152.62, 23,657.91 and 12,111.60

Step by Step Solution

1. Step 1: Write the proportion equation
   17,152.62 : 23,657.91 = 12,111.60 : x
2. Step 2: Convert to fraction form
   17,152.62/23,657.91 = 12,111.60/x
3. Step 3: Cross multiply
   17,152.62x = 23,657.91 × 12,111.60
4. Step 4: Simplify right side
   17,152.62x = 286,535,142.76
5. Step 5: Solve for x
   x = 286,535,142.76/17,152.62
6. Step 6: Final answer
   x = 16,705.04