Finding the Fourth Proportional to 9,374.72, 12,938.40 and 5,648

Step by Step Solution

1. Step 1: Write the proportion equation
   9,374.72 : 12,938.40 = 5,648 : x
2. Step 2: Convert to fraction form
   9,374.72/12,938.40 = 5,648/x
3. Step 3: Cross multiply
   9,374.72x = 12,938.40 × 5,648
4. Step 4: Simplify right side
   9,374.72x = 73,076,083.20
5. Step 5: Solve for x
   x = 73,076,083.20/9,374.72
6. Step 6: Final answer
   x = 7,795.02