Finding the Fourth Proportional to 12,938.01, 17,843.63 and 7,961.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,938.01 : 17,843.63 = 7,961.37 : x
2. Step 2: Convert to fraction form
   12,938.01/17,843.63 = 7,961.37/x
3. Step 3: Cross multiply
   12,938.01x = 17,843.63 × 7,961.37
4. Step 4: Simplify right side
   12,938.01x = 142,059,700.77
5. Step 5: Solve for x
   x = 142,059,700.77/12,938.01
6. Step 6: Final answer
   x = 10,980.03