Finding the Fourth Proportional to 23,499.74, 32,429.40 and 12,889.46

Step by Step Solution

1. Step 1: Write the proportion equation
   23,499.74 : 32,429.40 = 12,889.46 : x
2. Step 2: Convert to fraction form
   23,499.74/32,429.40 = 12,889.46/x
3. Step 3: Cross multiply
   23,499.74x = 32,429.40 × 12,889.46
4. Step 4: Simplify right side
   23,499.74x = 417,997,454.12
5. Step 5: Solve for x
   x = 417,997,454.12/23,499.74
6. Step 6: Final answer
   x = 17,787.32