Finding the Fourth Proportional to 35,964.06, 53,920.53 and 13,758.72

Step by Step Solution

1. Step 1: Write the proportion equation
   35,964.06 : 53,920.53 = 13,758.72 : x
2. Step 2: Convert to fraction form
   35,964.06/53,920.53 = 13,758.72/x
3. Step 3: Cross multiply
   35,964.06x = 53,920.53 × 13,758.72
4. Step 4: Simplify right side
   35,964.06x = 741,877,474.52
5. Step 5: Solve for x
   x = 741,877,474.52/35,964.06
6. Step 6: Final answer
   x = 20,628.30