Finding the Fourth Proportional to 43,320.41, 64,988.72 and 13,730.30

Step by Step Solution

1. Step 1: Write the proportion equation
   43,320.41 : 64,988.72 = 13,730.30 : x
2. Step 2: Convert to fraction form
   43,320.41/64,988.72 = 13,730.30/x
3. Step 3: Cross multiply
   43,320.41x = 64,988.72 × 13,730.30
4. Step 4: Simplify right side
   43,320.41x = 892,314,622.22
5. Step 5: Solve for x
   x = 892,314,622.22/43,320.41
6. Step 6: Final answer
   x = 20,598.02