Finding the Fourth Proportional to 12,889.56, 19,338.72 and 5,094.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,889.56 : 19,338.72 = 5,094.12 : x
2. Step 2: Convert to fraction form
   12,889.56/19,338.72 = 5,094.12/x
3. Step 3: Cross multiply
   12,889.56x = 19,338.72 × 5,094.12
4. Step 4: Simplify right side
   12,889.56x = 98,513,760.33
5. Step 5: Solve for x
   x = 98,513,760.33/12,889.56
6. Step 6: Final answer
   x = 7,642.91