Finding the Fourth Proportional to 23,499.39, 32,429.21 and 12,889.11

Step by Step Solution

1. Step 1: Write the proportion equation
   23,499.39 : 32,429.21 = 12,889.11 : x
2. Step 2: Convert to fraction form
   23,499.39/32,429.21 = 12,889.11/x
3. Step 3: Cross multiply
   23,499.39x = 32,429.21 × 12,889.11
4. Step 4: Simplify right side
   23,499.39x = 417,983,590.46
5. Step 5: Solve for x
   x = 417,983,590.46/23,499.39
6. Step 6: Final answer
   x = 17,787.00