Finding the Fourth Proportional to 11,602.72, 17,407.68 and 4,210.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,602.72 : 17,407.68 = 4,210.72 : x
2. Step 2: Convert to fraction form
   11,602.72/17,407.68 = 4,210.72/x
3. Step 3: Cross multiply
   11,602.72x = 17,407.68 × 4,210.72
4. Step 4: Simplify right side
   11,602.72x = 73,298,866.33
5. Step 5: Solve for x
   x = 73,298,866.33/11,602.72
6. Step 6: Final answer
   x = 6,317.39