Finding the Fourth Proportional to 22,846, 31,531.80 and 12,910

Step by Step Solution

1. Step 1: Write the proportion equation
   22,846 : 31,531.80 = 12,910 : x
2. Step 2: Convert to fraction form
   22,846/31,531.80 = 12,910/x
3. Step 3: Cross multiply
   22,846x = 31,531.80 × 12,910
4. Step 4: Simplify right side
   22,846x = 407,075,538
5. Step 5: Solve for x
   x = 407,075,538/22,846
6. Step 6: Final answer
   x = 17,818.24