Finding the Fourth Proportional to 10,556.40, 14,557.86 and 7,873.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,556.40 : 14,557.86 = 7,873.54 : x
2. Step 2: Convert to fraction form
   10,556.40/14,557.86 = 7,873.54/x
3. Step 3: Cross multiply
   10,556.40x = 14,557.86 × 7,873.54
4. Step 4: Simplify right side
   10,556.40x = 114,621,893.02
5. Step 5: Solve for x
   x = 114,621,893.02/10,556.40
6. Step 6: Final answer
   x = 10,858.05