Finding the Fourth Proportional to 13,023.94, 19,421.52 and 12,905.53

Step by Step Solution

1. Step 1: Write the proportion equation
   13,023.94 : 19,421.52 = 12,905.53 : x
2. Step 2: Convert to fraction form
   13,023.94/19,421.52 = 12,905.53/x
3. Step 3: Cross multiply
   13,023.94x = 19,421.52 × 12,905.53
4. Step 4: Simplify right side
   13,023.94x = 250,644,847.37
5. Step 5: Solve for x
   x = 250,644,847.37/13,023.94
6. Step 6: Final answer
   x = 19,244.94