Finding the Fourth Proportional to 23,555.89, 32,507.31 and 12,945.70

Step by Step Solution

1. Step 1: Write the proportion equation
   23,555.89 : 32,507.31 = 12,945.70 : x
2. Step 2: Convert to fraction form
   23,555.89/32,507.31 = 12,945.70/x
3. Step 3: Cross multiply
   23,555.89x = 32,507.31 × 12,945.70
4. Step 4: Simplify right side
   23,555.89x = 420,829,883.07
5. Step 5: Solve for x
   x = 420,829,883.07/23,555.89
6. Step 6: Final answer
   x = 17,865.17