Finding the Fourth Proportional to 21,020,658.56, 31,516,986.72 and 7,555,736.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,020,658.56 : 31,516,986.72 = 7,555,736.96 : x
2. Step 2: Convert to fraction form
   21,020,658.56/31,516,986.72 = 7,555,736.96/x
3. Step 3: Cross multiply
   21,020,658.56x = 31,516,986.72 × 7,555,736.96
4. Step 4: Simplify right side
   21,020,658.56x = 238,134,061,428,133.16
5. Step 5: Solve for x
   x = 238,134,061,428,133.16/21,020,658.56
6. Step 6: Final answer
   x = 11,328,572.83