Finding the Fourth Proportional to 13,139,156.98, 19,704,170.31 and 7,312,234.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,139,156.98 : 19,704,170.31 = 7,312,234.06 : x
2. Step 2: Convert to fraction form
   13,139,156.98/19,704,170.31 = 7,312,234.06/x
3. Step 3: Cross multiply
   13,139,156.98x = 19,704,170.31 × 7,312,234.06
4. Step 4: Simplify right side
   13,139,156.98x = 144,081,505,264,822.75
5. Step 5: Solve for x
   x = 144,081,505,264,822.75/13,139,156.98
6. Step 6: Final answer
   x = 10,965,810.48