Finding the Fourth Proportional to 9,218,196.58, 12,721,111.96 and 5,088,228.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,218,196.58 : 12,721,111.96 = 5,088,228.78 : x
2. Step 2: Convert to fraction form
   9,218,196.58/12,721,111.96 = 5,088,228.78/x
3. Step 3: Cross multiply
   9,218,196.58x = 12,721,111.96 × 5,088,228.78
4. Step 4: Simplify right side
   9,218,196.58x = 64,727,927,988,474.22
5. Step 5: Solve for x
   x = 64,727,927,988,474.22/9,218,196.58
6. Step 6: Final answer
   x = 7,021,756.09