Finding the Fourth Proportional to 22,487.11, 31,030.59 and 12,415.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,487.11 : 31,030.59 = 12,415.57 : x
2. Step 2: Convert to fraction form
   22,487.11/31,030.59 = 12,415.57/x
3. Step 3: Cross multiply
   22,487.11x = 31,030.59 × 12,415.57
4. Step 4: Simplify right side
   22,487.11x = 385,262,462.29
5. Step 5: Solve for x
   x = 385,262,462.29/22,487.11
6. Step 6: Final answer
   x = 17,132.59