Finding the Fourth Proportional to 12,903.00, 19,321.69 and 11,820.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,903.00 : 19,321.69 = 11,820.43 : x
2. Step 2: Convert to fraction form
   12,903.00/19,321.69 = 11,820.43/x
3. Step 3: Cross multiply
   12,903.00x = 19,321.69 × 11,820.43
4. Step 4: Simplify right side
   12,903.00x = 228,390,700.89
5. Step 5: Solve for x
   x = 228,390,700.89/12,903.00
6. Step 6: Final answer
   x = 17,700.59