Finding the Fourth Proportional to 23,659.51, 32,620.17 and 15,591.91

Step by Step Solution

1. Step 1: Write the proportion equation
   23,659.51 : 32,620.17 = 15,591.91 : x
2. Step 2: Convert to fraction form
   23,659.51/32,620.17 = 15,591.91/x
3. Step 3: Cross multiply
   23,659.51x = 32,620.17 × 15,591.91
4. Step 4: Simplify right side
   23,659.51x = 508,610,754.82
5. Step 5: Solve for x
   x = 508,610,754.82/23,659.51
6. Step 6: Final answer
   x = 21,497.10