Finding the Fourth Proportional to 13,730.64, 18,948.30 and 7,443

Step by Step Solution

1. Step 1: Write the proportion equation
   13,730.64 : 18,948.30 = 7,443 : x
2. Step 2: Convert to fraction form
   13,730.64/18,948.30 = 7,443/x
3. Step 3: Cross multiply
   13,730.64x = 18,948.30 × 7,443
4. Step 4: Simplify right side
   13,730.64x = 141,032,196.90
5. Step 5: Solve for x
   x = 141,032,196.90/13,730.64
6. Step 6: Final answer
   x = 10,271.35