Finding the Fourth Proportional to 8,749.31, 12,075.86 and 4,972.73

Step by Step Solution

1. Step 1: Write the proportion equation
   8,749.31 : 12,075.86 = 4,972.73 : x
2. Step 2: Convert to fraction form
   8,749.31/12,075.86 = 4,972.73/x
3. Step 3: Cross multiply
   8,749.31x = 12,075.86 × 4,972.73
4. Step 4: Simplify right side
   8,749.31x = 60,049,991.30
5. Step 5: Solve for x
   x = 60,049,991.30/8,749.31
6. Step 6: Final answer
   x = 6,863.40