Finding the Fourth Proportional to 8,736.48, 13,100.58 and 3,185.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,736.48 : 13,100.58 = 3,185.88 : x
2. Step 2: Convert to fraction form
   8,736.48/13,100.58 = 3,185.88/x
3. Step 3: Cross multiply
   8,736.48x = 13,100.58 × 3,185.88
4. Step 4: Simplify right side
   8,736.48x = 41,736,875.81
5. Step 5: Solve for x
   x = 41,736,875.81/8,736.48
6. Step 6: Final answer
   x = 4,777.31