Finding the Fourth Proportional to 7,276.30, 10,905.63 and 5,185.06

Step by Step Solution

1. Step 1: Write the proportion equation
   7,276.30 : 10,905.63 = 5,185.06 : x
2. Step 2: Convert to fraction form
   7,276.30/10,905.63 = 5,185.06/x
3. Step 3: Cross multiply
   7,276.30x = 10,905.63 × 5,185.06
4. Step 4: Simplify right side
   7,276.30x = 56,546,345.89
5. Step 5: Solve for x
   x = 56,546,345.89/7,276.30
6. Step 6: Final answer
   x = 7,771.30