Finding the Fourth Proportional to 7,100.80, 10,581.98 and 6,887.03

Step by Step Solution

1. Step 1: Write the proportion equation
   7,100.80 : 10,581.98 = 6,887.03 : x
2. Step 2: Convert to fraction form
   7,100.80/10,581.98 = 6,887.03/x
3. Step 3: Cross multiply
   7,100.80x = 10,581.98 × 6,887.03
4. Step 4: Simplify right side
   7,100.80x = 72,878,326.37
5. Step 5: Solve for x
   x = 72,878,326.37/7,100.80
6. Step 6: Final answer
   x = 10,263.40