Finding the Fourth Proportional to 8,751.09, 13,123.80 and 2,906.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,751.09 : 13,123.80 = 2,906.55 : x
2. Step 2: Convert to fraction form
   8,751.09/13,123.80 = 2,906.55/x
3. Step 3: Cross multiply
   8,751.09x = 13,123.80 × 2,906.55
4. Step 4: Simplify right side
   8,751.09x = 38,144,980.89
5. Step 5: Solve for x
   x = 38,144,980.89/8,751.09
6. Step 6: Final answer
   x = 4,358.88