Finding the Fourth Proportional to 21,919,828.86, 30,248,619.01 and 12,130,685.64

Step by Step Solution

1. Step 1: Write the proportion equation
   21,919,828.86 : 30,248,619.01 = 12,130,685.64 : x
2. Step 2: Convert to fraction form
   21,919,828.86/30,248,619.01 = 12,130,685.64/x
3. Step 3: Cross multiply
   21,919,828.86x = 30,248,619.01 × 12,130,685.64
4. Step 4: Simplify right side
   21,919,828.86x = 366,936,488,224,111.31
5. Step 5: Solve for x
   x = 366,936,488,224,111.31/21,919,828.86
6. Step 6: Final answer
   x = 16,739,933.99