Finding the Fourth Proportional to 9,815.03, 13,543.29 and 5,779.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,815.03 : 13,543.29 = 5,779.46 : x
2. Step 2: Convert to fraction form
   9,815.03/13,543.29 = 5,779.46/x
3. Step 3: Cross multiply
   9,815.03x = 13,543.29 × 5,779.46
4. Step 4: Simplify right side
   9,815.03x = 78,272,902.82
5. Step 5: Solve for x
   x = 78,272,902.82/9,815.03
6. Step 6: Final answer
   x = 7,974.80