Finding the Fourth Proportional to 12,994.29, 19,495.53 and 7,155

Step by Step Solution

1. Step 1: Write the proportion equation
   12,994.29 : 19,495.53 = 7,155 : x
2. Step 2: Convert to fraction form
   12,994.29/19,495.53 = 7,155/x
3. Step 3: Cross multiply
   12,994.29x = 19,495.53 × 7,155
4. Step 4: Simplify right side
   12,994.29x = 139,490,517.15
5. Step 5: Solve for x
   x = 139,490,517.15/12,994.29
6. Step 6: Final answer
   x = 10,734.75