Finding the Fourth Proportional to 5,588.34, 8,380.56 and 1,638.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,588.34 : 8,380.56 = 1,638.52 : x
2. Step 2: Convert to fraction form
   5,588.34/8,380.56 = 1,638.52/x
3. Step 3: Cross multiply
   5,588.34x = 8,380.56 × 1,638.52
4. Step 4: Simplify right side
   5,588.34x = 13,731,715.17
5. Step 5: Solve for x
   x = 13,731,715.17/5,588.34
6. Step 6: Final answer
   x = 2,457.21