Finding the Fourth Proportional to 12,154,994.72, 18,225,761.79 and 4,971,573.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,154,994.72 : 18,225,761.79 = 4,971,573.71 : x
2. Step 2: Convert to fraction form
   12,154,994.72/18,225,761.79 = 4,971,573.71/x
3. Step 3: Cross multiply
   12,154,994.72x = 18,225,761.79 × 4,971,573.71
4. Step 4: Simplify right side
   12,154,994.72x = 90,610,718,159,886.53
5. Step 5: Solve for x
   x = 90,610,718,159,886.53/12,154,994.72
6. Step 6: Final answer
   x = 7,454,607.78