Finding the Fourth Proportional to 12,359.31, 17,055.86 and 7,054.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,359.31 : 17,055.86 = 7,054.02 : x
2. Step 2: Convert to fraction form
   12,359.31/17,055.86 = 7,054.02/x
3. Step 3: Cross multiply
   12,359.31x = 17,055.86 × 7,054.02
4. Step 4: Simplify right side
   12,359.31x = 120,312,377.56
5. Step 5: Solve for x
   x = 120,312,377.56/12,359.31
6. Step 6: Final answer
   x = 9,734.55