Finding the Fourth Proportional to 23,588.42, 32,551.78 and 12,978.06

Step by Step Solution

1. Step 1: Write the proportion equation
   23,588.42 : 32,551.78 = 12,978.06 : x
2. Step 2: Convert to fraction form
   23,588.42/32,551.78 = 12,978.06/x
3. Step 3: Cross multiply
   23,588.42x = 32,551.78 × 12,978.06
4. Step 4: Simplify right side
   23,588.42x = 422,458,953.95
5. Step 5: Solve for x
   x = 422,458,953.95/23,588.42
6. Step 6: Final answer
   x = 17,909.59