Finding the Fourth Proportional to 15,423.94, 23,131.86 and 5,561.38

Step by Step Solution

1. Step 1: Write the proportion equation
   15,423.94 : 23,131.86 = 5,561.38 : x
2. Step 2: Convert to fraction form
   15,423.94/23,131.86 = 5,561.38/x
3. Step 3: Cross multiply
   15,423.94x = 23,131.86 × 5,561.38
4. Step 4: Simplify right side
   15,423.94x = 128,645,063.57
5. Step 5: Solve for x
   x = 128,645,063.57/15,423.94
6. Step 6: Final answer
   x = 8,340.61