Finding the Fourth Proportional to 9,998.86, 13,798.70 and 5,461.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,998.86 : 13,798.70 = 5,461.82 : x
2. Step 2: Convert to fraction form
   9,998.86/13,798.70 = 5,461.82/x
3. Step 3: Cross multiply
   9,998.86x = 13,798.70 × 5,461.82
4. Step 4: Simplify right side
   9,998.86x = 75,366,063.79
5. Step 5: Solve for x
   x = 75,366,063.79/9,998.86
6. Step 6: Final answer
   x = 7,537.47