Finding the Fourth Proportional to 17,670.51, 26,506.71 and 7,142.13

Step by Step Solution

1. Step 1: Write the proportion equation
   17,670.51 : 26,506.71 = 7,142.13 : x
2. Step 2: Convert to fraction form
   17,670.51/26,506.71 = 7,142.13/x
3. Step 3: Cross multiply
   17,670.51x = 26,506.71 × 7,142.13
4. Step 4: Simplify right side
   17,670.51x = 189,314,368.69
5. Step 5: Solve for x
   x = 189,314,368.69/17,670.51
6. Step 6: Final answer
   x = 10,713.58