Finding the Fourth Proportional to 10,881.72, 16,323.51 and 3,090.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,881.72 : 16,323.51 = 3,090.51 : x
2. Step 2: Convert to fraction form
   10,881.72/16,323.51 = 3,090.51/x
3. Step 3: Cross multiply
   10,881.72x = 16,323.51 × 3,090.51
4. Step 4: Simplify right side
   10,881.72x = 50,447,970.89
5. Step 5: Solve for x
   x = 50,447,970.89/10,881.72
6. Step 6: Final answer
   x = 4,636.03