Finding the Fourth Proportional to 11,627.06, 17,438.72 and 3,191.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,627.06 : 17,438.72 = 3,191.60 : x
2. Step 2: Convert to fraction form
   11,627.06/17,438.72 = 3,191.60/x
3. Step 3: Cross multiply
   11,627.06x = 17,438.72 × 3,191.60
4. Step 4: Simplify right side
   11,627.06x = 55,657,366.25
5. Step 5: Solve for x
   x = 55,657,366.25/11,627.06
6. Step 6: Final answer
   x = 4,786.88