Finding the Fourth Proportional to 23,418, 32,316.84 and 12,807.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,418 : 32,316.84 = 12,807.72 : x
2. Step 2: Convert to fraction form
   23,418/32,316.84 = 12,807.72/x
3. Step 3: Cross multiply
   23,418x = 32,316.84 × 12,807.72
4. Step 4: Simplify right side
   23,418x = 413,905,038.00
5. Step 5: Solve for x
   x = 413,905,038.00/23,418
6. Step 6: Final answer
   x = 17,674.65