Finding the Fourth Proportional to 9,090.63, 13,637.16 and 3,168.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,090.63 : 13,637.16 = 3,168.72 : x
2. Step 2: Convert to fraction form
   9,090.63/13,637.16 = 3,168.72/x
3. Step 3: Cross multiply
   9,090.63x = 13,637.16 × 3,168.72
4. Step 4: Simplify right side
   9,090.63x = 43,212,341.64
5. Step 5: Solve for x
   x = 43,212,341.64/9,090.63
6. Step 6: Final answer
   x = 4,753.50