Finding the Fourth Proportional to 29,870.89, 44,778.64 and 13,222.05

Step by Step Solution

1. Step 1: Write the proportion equation
   29,870.89 : 44,778.64 = 13,222.05 : x
2. Step 2: Convert to fraction form
   29,870.89/44,778.64 = 13,222.05/x
3. Step 3: Cross multiply
   29,870.89x = 44,778.64 × 13,222.05
4. Step 4: Simplify right side
   29,870.89x = 592,065,160.06
5. Step 5: Solve for x
   x = 592,065,160.06/29,870.89
6. Step 6: Final answer
   x = 19,820.81