Finding the Fourth Proportional to 7,080.90, 10,623.18 and 3,385.98

Step by Step Solution

1. Step 1: Write the proportion equation
   7,080.90 : 10,623.18 = 3,385.98 : x
2. Step 2: Convert to fraction form
   7,080.90/10,623.18 = 3,385.98/x
3. Step 3: Cross multiply
   7,080.90x = 10,623.18 × 3,385.98
4. Step 4: Simplify right side
   7,080.90x = 35,969,875.02
5. Step 5: Solve for x
   x = 35,969,875.02/7,080.90
6. Step 6: Final answer
   x = 5,079.85