Finding the Fourth Proportional to 13,080.94, 18,051.58 and 7,112.55

Step by Step Solution

1. Step 1: Write the proportion equation
   13,080.94 : 18,051.58 = 7,112.55 : x
2. Step 2: Convert to fraction form
   13,080.94/18,051.58 = 7,112.55/x
3. Step 3: Cross multiply
   13,080.94x = 18,051.58 × 7,112.55
4. Step 4: Simplify right side
   13,080.94x = 128,392,747.55
5. Step 5: Solve for x
   x = 128,392,747.55/13,080.94
6. Step 6: Final answer
   x = 9,815.26