Finding the Fourth Proportional to 18,123.60, 25,012.76 and 10,164.32

Step by Step Solution

1. Step 1: Write the proportion equation
   18,123.60 : 25,012.76 = 10,164.32 : x
2. Step 2: Convert to fraction form
   18,123.60/25,012.76 = 10,164.32/x
3. Step 3: Cross multiply
   18,123.60x = 25,012.76 × 10,164.32
4. Step 4: Simplify right side
   18,123.60x = 254,237,696.72
5. Step 5: Solve for x
   x = 254,237,696.72/18,123.60
6. Step 6: Final answer
   x = 14,027.99