Finding the Fourth Proportional to 7,004.56, 10,506.72 and 1,810.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,004.56 : 10,506.72 = 1,810.40 : x
2. Step 2: Convert to fraction form
   7,004.56/10,506.72 = 1,810.40/x
3. Step 3: Cross multiply
   7,004.56x = 10,506.72 × 1,810.40
4. Step 4: Simplify right side
   7,004.56x = 19,021,365.89
5. Step 5: Solve for x
   x = 19,021,365.89/7,004.56
6. Step 6: Final answer
   x = 2,715.57