Finding the Fourth Proportional to 11,830.50, 16,325.46 and 7,638.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,830.50 : 16,325.46 = 7,638.72 : x
2. Step 2: Convert to fraction form
   11,830.50/16,325.46 = 7,638.72/x
3. Step 3: Cross multiply
   11,830.50x = 16,325.46 × 7,638.72
4. Step 4: Simplify right side
   11,830.50x = 124,705,617.81
5. Step 5: Solve for x
   x = 124,705,617.81/11,830.50
6. Step 6: Final answer
   x = 10,541.03