Finding the Fourth Proportional to 13,210.74, 19,818.69 and 4,890.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,210.74 : 19,818.69 = 4,890.82 : x
2. Step 2: Convert to fraction form
   13,210.74/19,818.69 = 4,890.82/x
3. Step 3: Cross multiply
   13,210.74x = 19,818.69 × 4,890.82
4. Step 4: Simplify right side
   13,210.74x = 96,929,645.43
5. Step 5: Solve for x
   x = 96,929,645.43/13,210.74
6. Step 6: Final answer
   x = 7,337.19