Finding the Fourth Proportional to 13,097.49, 18,074.72 and 7,129.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,097.49 : 18,074.72 = 7,129.34 : x
2. Step 2: Convert to fraction form
   13,097.49/18,074.72 = 7,129.34/x
3. Step 3: Cross multiply
   13,097.49x = 18,074.72 × 7,129.34
4. Step 4: Simplify right side
   13,097.49x = 128,860,887.29
5. Step 5: Solve for x
   x = 128,860,887.29/13,097.49
6. Step 6: Final answer
   x = 9,838.59