Finding the Fourth Proportional to 7,457.07, 10,290.55 and 4,099.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,457.07 : 10,290.55 = 4,099.89 : x
2. Step 2: Convert to fraction form
   7,457.07/10,290.55 = 4,099.89/x
3. Step 3: Cross multiply
   7,457.07x = 10,290.55 × 4,099.89
4. Step 4: Simplify right side
   7,457.07x = 42,190,123.04
5. Step 5: Solve for x
   x = 42,190,123.04/7,457.07
6. Step 6: Final answer
   x = 5,657.73