Finding the Fourth Proportional to 11,451.51, 17,164.94 and 7,490.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,451.51 : 17,164.94 = 7,490.30 : x
2. Step 2: Convert to fraction form
   11,451.51/17,164.94 = 7,490.30/x
3. Step 3: Cross multiply
   11,451.51x = 17,164.94 × 7,490.30
4. Step 4: Simplify right side
   11,451.51x = 128,570,426.81
5. Step 5: Solve for x
   x = 128,570,426.81/11,451.51
6. Step 6: Final answer
   x = 11,227.38