Finding the Fourth Proportional to 12,870.48, 19,316.79 and 7,334.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.48 : 19,316.79 = 7,334.94 : x
2. Step 2: Convert to fraction form
   12,870.48/19,316.79 = 7,334.94/x
3. Step 3: Cross multiply
   12,870.48x = 19,316.79 × 7,334.94
4. Step 4: Simplify right side
   12,870.48x = 141,687,495.64
5. Step 5: Solve for x
   x = 141,687,495.64/12,870.48
6. Step 6: Final answer
   x = 11,008.72