Finding the Fourth Proportional to 23,499.18, 32,429.88 and 12,889.26

Step by Step Solution

1. Step 1: Write the proportion equation
   23,499.18 : 32,429.88 = 12,889.26 : x
2. Step 2: Convert to fraction form
   23,499.18/32,429.88 = 12,889.26/x
3. Step 3: Cross multiply
   23,499.18x = 32,429.88 × 12,889.26
4. Step 4: Simplify right side
   23,499.18x = 417,997,155.09
5. Step 5: Solve for x
   x = 417,997,155.09/23,499.18
6. Step 6: Final answer
   x = 17,787.73