Finding the Fourth Proportional to 22,487.58, 31,031.50 and 12,415.77

Step by Step Solution

1. Step 1: Write the proportion equation
   22,487.58 : 31,031.50 = 12,415.77 : x
2. Step 2: Convert to fraction form
   22,487.58/31,031.50 = 12,415.77/x
3. Step 3: Cross multiply
   22,487.58x = 31,031.50 × 12,415.77
4. Step 4: Simplify right side
   22,487.58x = 385,279,966.76
5. Step 5: Solve for x
   x = 385,279,966.76/22,487.58
6. Step 6: Final answer
   x = 17,133.01