Finding the Fourth Proportional to 12,843.30, 19,271.35 and 7,300.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,843.30 : 19,271.35 = 7,300.90 : x
2. Step 2: Convert to fraction form
   12,843.30/19,271.35 = 7,300.90/x
3. Step 3: Cross multiply
   12,843.30x = 19,271.35 × 7,300.90
4. Step 4: Simplify right side
   12,843.30x = 140,698,199.22
5. Step 5: Solve for x
   x = 140,698,199.22/12,843.30
6. Step 6: Final answer
   x = 10,954.99