Finding the Fourth Proportional to 13,436.10, 18,541.23 and 7,769.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,436.10 : 18,541.23 = 7,769.94 : x
2. Step 2: Convert to fraction form
   13,436.10/18,541.23 = 7,769.94/x
3. Step 3: Cross multiply
   13,436.10x = 18,541.23 × 7,769.94
4. Step 4: Simplify right side
   13,436.10x = 144,064,244.63
5. Step 5: Solve for x
   x = 144,064,244.63/13,436.10
6. Step 6: Final answer
   x = 10,722.18