Finding the Fourth Proportional to 12,890.02, 17,787.72 and 7,301.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,890.02 : 17,787.72 = 7,301.02 : x
2. Step 2: Convert to fraction form
   12,890.02/17,787.72 = 7,301.02/x
3. Step 3: Cross multiply
   12,890.02x = 17,787.72 × 7,301.02
4. Step 4: Simplify right side
   12,890.02x = 129,868,499.47
5. Step 5: Solve for x
   x = 129,868,499.47/12,890.02
6. Step 6: Final answer
   x = 10,075.12