Finding the Fourth Proportional to 39,956.04, 55,141.20 and 22,053.60

Step by Step Solution

1. Step 1: Write the proportion equation
   39,956.04 : 55,141.20 = 22,053.60 : x
2. Step 2: Convert to fraction form
   39,956.04/55,141.20 = 22,053.60/x
3. Step 3: Cross multiply
   39,956.04x = 55,141.20 × 22,053.60
4. Step 4: Simplify right side
   39,956.04x = 1,216,061,968.32
5. Step 5: Solve for x
   x = 1,216,061,968.32/39,956.04
6. Step 6: Final answer
   x = 30,435.00