Finding the Fourth Proportional to 13,059.24, 18,021.40 and 7,090.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,059.24 : 18,021.40 = 7,090.72 : x
2. Step 2: Convert to fraction form
   13,059.24/18,021.40 = 7,090.72/x
3. Step 3: Cross multiply
   13,059.24x = 18,021.40 × 7,090.72
4. Step 4: Simplify right side
   13,059.24x = 127,784,701.41
5. Step 5: Solve for x
   x = 127,784,701.41/13,059.24
6. Step 6: Final answer
   x = 9,785.00