Finding the Fourth Proportional to 28,659,049.33, 39,551,148.48 and 21,581,973.37

Step by Step Solution

1. Step 1: Write the proportion equation
   28,659,049.33 : 39,551,148.48 = 21,581,973.37 : x
2. Step 2: Convert to fraction form
   28,659,049.33/39,551,148.48 = 21,581,973.37/x
3. Step 3: Cross multiply
   28,659,049.33x = 39,551,148.48 × 21,581,973.37
4. Step 4: Simplify right side
   28,659,049.33x = 853,591,833,108,931.88
5. Step 5: Solve for x
   x = 853,591,833,108,931.88/28,659,049.33
6. Step 6: Final answer
   x = 29,784,373.63