Finding the Fourth Proportional to 28,339.93, 39,106.69 and 16,404.01

Step by Step Solution

1. Step 1: Write the proportion equation
   28,339.93 : 39,106.69 = 16,404.01 : x
2. Step 2: Convert to fraction form
   28,339.93/39,106.69 = 16,404.01/x
3. Step 3: Cross multiply
   28,339.93x = 39,106.69 × 16,404.01
4. Step 4: Simplify right side
   28,339.93x = 641,506,533.83
5. Step 5: Solve for x
   x = 641,506,533.83/28,339.93
6. Step 6: Final answer
   x = 22,636.14