Finding the Fourth Proportional to 22,238.60, 30,681.86 and 12,671.77

Step by Step Solution

1. Step 1: Write the proportion equation
   22,238.60 : 30,681.86 = 12,671.77 : x
2. Step 2: Convert to fraction form
   22,238.60/30,681.86 = 12,671.77/x
3. Step 3: Cross multiply
   22,238.60x = 30,681.86 × 12,671.77
4. Step 4: Simplify right side
   22,238.60x = 388,793,411.18
5. Step 5: Solve for x
   x = 388,793,411.18/22,238.60
6. Step 6: Final answer
   x = 17,482.82