Finding the Fourth Proportional to 13,097.17, 18,073.56 and 7,128.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,097.17 : 18,073.56 = 7,128.84 : x
2. Step 2: Convert to fraction form
   13,097.17/18,073.56 = 7,128.84/x
3. Step 3: Cross multiply
   13,097.17x = 18,073.56 × 7,128.84
4. Step 4: Simplify right side
   13,097.17x = 128,843,551.83
5. Step 5: Solve for x
   x = 128,843,551.83/13,097.17
6. Step 6: Final answer
   x = 9,837.51