Finding the Fourth Proportional to 13,348.42, 18,421.61 and 7,683.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,348.42 : 18,421.61 = 7,683.05 : x
2. Step 2: Convert to fraction form
   13,348.42/18,421.61 = 7,683.05/x
3. Step 3: Cross multiply
   13,348.42x = 18,421.61 × 7,683.05
4. Step 4: Simplify right side
   13,348.42x = 141,534,077.81
5. Step 5: Solve for x
   x = 141,534,077.81/13,348.42
6. Step 6: Final answer
   x = 10,603.06