Finding the Fourth Proportional to 13,059.02, 18,021.34 and 7,090.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,059.02 : 18,021.34 = 7,090.56 : x
2. Step 2: Convert to fraction form
   13,059.02/18,021.34 = 7,090.56/x
3. Step 3: Cross multiply
   13,059.02x = 18,021.34 × 7,090.56
4. Step 4: Simplify right side
   13,059.02x = 127,781,392.55
5. Step 5: Solve for x
   x = 127,781,392.55/13,059.02
6. Step 6: Final answer
   x = 9,784.91