Finding the Fourth Proportional to 35,624.10, 53,448.54 and 13,443.87

Step by Step Solution

1. Step 1: Write the proportion equation
   35,624.10 : 53,448.54 = 13,443.87 : x
2. Step 2: Convert to fraction form
   35,624.10/53,448.54 = 13,443.87/x
3. Step 3: Cross multiply
   35,624.10x = 53,448.54 × 13,443.87
4. Step 4: Simplify right side
   35,624.10x = 718,555,223.45
5. Step 5: Solve for x
   x = 718,555,223.45/35,624.10
6. Step 6: Final answer
   x = 20,170.48