Finding the Fourth Proportional to 9,106.72, 13,656.78 and 3,181.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,106.72 : 13,656.78 = 3,181.95 : x
2. Step 2: Convert to fraction form
   9,106.72/13,656.78 = 3,181.95/x
3. Step 3: Cross multiply
   9,106.72x = 13,656.78 × 3,181.95
4. Step 4: Simplify right side
   9,106.72x = 43,455,191.12
5. Step 5: Solve for x
   x = 43,455,191.12/9,106.72
6. Step 6: Final answer
   x = 4,771.77