Finding the Fourth Proportional to 12,706.47, 17,539.74 and 7,403.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,706.47 : 17,539.74 = 7,403.00 : x
2. Step 2: Convert to fraction form
   12,706.47/17,539.74 = 7,403.00/x
3. Step 3: Cross multiply
   12,706.47x = 17,539.74 × 7,403.00
4. Step 4: Simplify right side
   12,706.47x = 129,846,607.52
5. Step 5: Solve for x
   x = 129,846,607.52/12,706.47
6. Step 6: Final answer
   x = 10,218.94