Finding the Fourth Proportional to 18,191.10, 25,103.34 and 10,641.90

Step by Step Solution

1. Step 1: Write the proportion equation
   18,191.10 : 25,103.34 = 10,641.90 : x
2. Step 2: Convert to fraction form
   18,191.10/25,103.34 = 10,641.90/x
3. Step 3: Cross multiply
   18,191.10x = 25,103.34 × 10,641.90
4. Step 4: Simplify right side
   18,191.10x = 267,147,055.22
5. Step 5: Solve for x
   x = 267,147,055.22/18,191.10
6. Step 6: Final answer
   x = 14,685.60