Finding the Fourth Proportional to 22,448.33, 30,978.08 and 12,376.77

Step by Step Solution

1. Step 1: Write the proportion equation
   22,448.33 : 30,978.08 = 12,376.77 : x
2. Step 2: Convert to fraction form
   22,448.33/30,978.08 = 12,376.77/x
3. Step 3: Cross multiply
   22,448.33x = 30,978.08 × 12,376.77
4. Step 4: Simplify right side
   22,448.33x = 383,408,509.32
5. Step 5: Solve for x
   x = 383,408,509.32/22,448.33
6. Step 6: Final answer
   x = 17,079.60