Finding the Fourth Proportional to 9,374.56, 12,936.44 and 5,182.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,374.56 : 12,936.44 = 5,182.72 : x
2. Step 2: Convert to fraction form
   9,374.56/12,936.44 = 5,182.72/x
3. Step 3: Cross multiply
   9,374.56x = 12,936.44 × 5,182.72
4. Step 4: Simplify right side
   9,374.56x = 67,045,946.32
5. Step 5: Solve for x
   x = 67,045,946.32/9,374.56
6. Step 6: Final answer
   x = 7,151.90